10 Best Portable Fish Finder of 2026

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Portable fish finders promise to reveal what’s beneath the surface, but the most common frustration isn’t the sonar – it’s the connection. Many castable units advertise Bluetooth ranges of 200 feet, only to drop the signal at 50. That gap between marketing and real-world performance turns a promising gadget into a frustrating one.

Battery life is another area where expectations fall short. Several budget models that work well initially fail to hold a charge after a few months, leaving anglers with a dead unit. This is especially critical for ice fishing where a dead battery means a lost opportunity. The trick is finding a fish finder that delivers on both wireless reliability and long-term power.

This guide focuses on the models that actually maintain a stable connection and keep working trip after trip – whether you’re fishing from shore, a kayak, or through the ice. We’ve separated the dependable options from the disposable ones, so you can choose with confidence.

Our Top Picks
Garmin Striker 4 Portable
Best OverallGarmin Striker 4 Portable

CHIRP sonar with built-in GPS and portable kit for kayak, ice, and boat

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Deeper PRO+ 2 Sonar
Best for MappingDeeper PRO+ 2 Sonar

Triple-beam sonar and GPS that creates bathymetric maps on your phone

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Garmin Striker Cast
Best Castable (Garmin)Garmin Striker Cast

Garmin sonar and flasher mode in a tennis-ball-sized castable unit

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Venterior Portable Fish Finder
Best Budget with DisplayVenterior Portable Fish Finder

Color 2.6-inch TFT display with wireless sonar sensor at a budget price

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Garmin Striker Plus 4 Ice
Best Ice Fishing BundleGarmin Striker Plus 4 Ice

Ice-specific transducer and flasher mode in a rugged portable case

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HawkEye Fishtrax 1C
Best Compact DisplayHawkEye Fishtrax 1C

Lightweight color display with flasher mode for kayak and ice

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Best for Kayak, Ice, Boat

Garmin Striker 4 Portable

Garmin Striker 4 Portable

Key Features

  • Depth Range: 1,600 ft fresh
  • Display: 3.5" color LCD
  • Connectivity: Wired transducer
  • Battery Life: Rechargeable, long
  • Mount Type: Portable kit
  • Price: Premium

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The Garmin Striker 4 Portable delivers crisp CHIRP sonar that marks fish and structure with enough target separation to distinguish a submerged log from a bass. The built-in GPS lets you save waypoints and mark hot spots directly on the 3.5-inch color display, so you don’t need a phone or tablet to navigate your favorite fishing holes. The portable kit includes a rechargeable battery, padded bag, and a transducer mount that slides onto boat transoms, kayak rails, or ice auger holes. All of this works without relying on wireless connections — no Bluetooth drops or limited range to worry about.

Battery life holds up across multiple full-day trips between charges, which matters when you’re heading out for a weekend on the water and don’t want to carry a charger. The kit is light enough to sling over a shoulder and move between a kayak and a friend’s boat without fuss. For shore anglers, the included suction-cup mount lets you cast the transducer from the bank, though you’ll want to keep the display within a few feet of the water’s edge.

This is the right tool for anglers who fish in multiple environments — kayak, ice, boat, or shore — and want one unit that does it all without compromises. The small screen is a tradeoff for portability; if you need a larger display for reading fine sonar details at a glance, a bigger fixed-mount unit would serve you better. Setup instructions are sparse, so first-time users may want to look up a quick video guide to get the transducer angle and gain settings dialed in.

💡 Tip: Look up a video guide for setup — the included manual is thin, but online tutorials cover transducer positioning and gain settings clearly.

Pros

  • CHIRP sonar provides clear fish arches and structure separation in both fresh and saltwater.
  • Battery lasts multiple full fishing trips between charges, reducing worry about running out on the water.
  • Portable kit with bag, battery, and mounts makes it easy to switch between kayak, ice hole, and boat.
  • Built-in GPS waypoint mapping works independently of any phone app, saving spots directly on the unit.

Cons

  • The 3.5-inch screen is small enough that reading fine sonar details may be difficult for some users.
  • Assembly instructions are minimal, so setup can be confusing without seeking online resources.

The only portable fish finder that combines CHIRP sonar, GPS mapping, and a complete kit in one package — no phone required, no wireless hassles, and a track record backed by thousands of real-world uses.

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Best for Ice, Kayak, Shore

Deeper PRO+ 2 Sonar

Deeper PRO+ 2 Sonar

Key Features

  • Depth Range: 330 ft
  • Display: Phone screen
  • Connectivity: Wi-Fi to smartphone
  • Battery Life: Rechargeable
  • Mount Type: Castable wireless
  • Price: Mid-Range

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The Deeper PRO+ 2 maps underwater terrain with three beam angles and built-in GPS, giving you the ability to build custom bathymetric charts on your phone — a feature most castable units lack. Where the top pick (a complete wired kit with CHIRP sonar) avoids wireless hiccups entirely, this castable design trades that reliability for flexibility across kayak, ice, and shore fishing. Its Wi-Fi connection can be short-range or drop in choppy water, which matters most when you’re fishing at distance from your phone.

This is the right tool for anglers who prioritize mapping structure and pinpointing drop-offs over having a worry-free connection. It suits ice and kayak fishing especially well, where the GPS tracking adds real value for marking holes or waypoints. However, advanced features like detailed chart sharing require a subscription — adding to the long-term cost — and the 3.2 oz weight calls for a medium-heavy rod and braided line to cast effectively.

💡 Tip: Pair with a medium-heavy rod and 20-lb braided line to cast the 3.2 oz transducer without strain.

Pros

  • Built-in GPS and three selectable beam angles produce detailed contour maps as you fish.
  • Accurate sonar across narrow, medium, and wide beams adapts to shallow cover or deep structure.
  • Works from shore, kayak, boat, and ice — one device covers multiple fishing styles.

Cons

  • At 3.2 oz, this castable transducer needs a stout rod and heavy line to launch effectively.
  • Advanced mapping and analysis features are locked behind a subscription, increasing the total cost of ownership.
  • Wi-Fi connection can be intermittent, especially when the device is more than a short distance away or in choppy water.

A powerful mapping companion for anglers who value chart creation over plug-and-play simplicity — subscription fees and occasional Wi‑Fi drops are worth checking before buying.

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Best for Shore, Kayak, Ice

Venterior Portable Fish Finder

Venterior Portable Fish Finder

Key Features

  • Depth Range: 2.6–164 ft
  • Display: 2.6" color TFT
  • Connectivity: Castable wireless
  • Battery Life: Rechargeable
  • Mount Type: Castable wireless
  • Price: Budget

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The Venterior delivers accurate sonar readings through a standalone 2.6-inch color display, removing the need to juggle a smartphone while on the water. It covers depths up to 164 feet with a wide 105° beam, making it effective for shore, kayak, and ice fishing. The battery, however, can be inconsistent – some units may struggle to hold a charge after a few months, which matters on longer trips.

This unit suits budget-conscious anglers who want a simple, all-in-one fish finder without app dependencies. The screen can be hard to read in direct sunlight, but switching to the white background mode helps. Battery inconsistency means it’s worth charging the sensor before every outing – a manageable routine for occasional weekend fishing.

💡 Tip: Fully charge the sensor before each trip and carry a portable power bank to mitigate the battery inconsistency.

Pros

  • Accurate depth and fish detection for the price point.
  • Very easy to set up and operate out of the box.
  • Great value for a dedicated-display castable fish finder.
  • Lightweight and portable for shore, kayak, and ice use.

Cons

  • Screen legibility drops in bright sunlight without switching to white background.
  • Battery life may become inconsistent over time; some units stop holding a charge after a few months.

For the angler who wants a dedicated screen and reliable basic sonar without spending more, the Venterior delivers – provided you’re comfortable with occasional battery quirks and a workable sunlight workaround.

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Best for Ice Fishing Only

Garmin Striker Plus 4 Ice

Garmin Striker Plus 4 Ice

Key Features

  • Display: 4" WVGA color
  • Connectivity: Wired ice transducer
  • Battery Life: Rechargeable, long
  • Mount Type: Portable case
  • Price: Luxury

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The Garmin Striker Plus 4 Ice Bundle targets serious ice anglers with a dedicated ice transducer and flasher mode that deliver clear target separation through the ice. Where the standard Striker 4 Portable handles multiple fishing styles, this bundle narrows its focus to excel in winter conditions — the flasher mode provides real-time jigging feedback, and the built-in GPS with Quickdraw Contours lets you mark and return to productive holes trip after trip.

This bundle is built for anglers who spend most of their winter on hard water and want professional-grade sonar without relying on a smartphone. The premium price means it’s overkill for anyone fishing open water from shore or a boat — the standard portable kit offers better value in those scenarios. Battery life holds up across multiple days on the ice, and the rugged carrying case keeps everything organized in cold conditions.

Pros

  • Dedicated ice transducer and flasher mode provide clear target separation through ice
  • Long battery life supports multiple day trips without recharging
  • Simple setup and operation that works for first-time ice sonar users
  • Built-in GPS with Quickdraw Contours for marking and returning to fishing spots

Cons

  • Premium price is a heavier investment than most portable fish finders; best suited for regular ice anglers who will use it weekly

For dedicated ice fishermen who want professional-grade sonar and GPS mapping without smartphone dependency, this bundle delivers exactly what it promises — but it’s not the right choice for casual or open-water anglers.

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Best for Mapping Enthusiasts

Reelsonar iBobber Classic

Reelsonar iBobber Classic

Key Features

  • Depth Range: 135 ft
  • Display: Phone screen
  • Connectivity: Bluetooth to phone
  • Battery Life: 10+ hrs (claimed)
  • Mount Type: Castable with line
  • Price: Budget

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The Reelsonar iBobber Classic taps into a large user base that shares bathymetric maps and fishing spots through the app, making it a compelling choice for tech-inclined anglers who enjoy exploring data. Setup is quick via smartphone, and depth readings are generally accurate in typical freshwater conditions. However, Bluetooth connectivity can drop unexpectedly, and false fish readings occur occasionally, limiting its reliability for serious fishing. These issues keep it from being a dependable primary fish finder, but it shines as a mapping-oriented gadget for casual or experimental use.

Pros

  • Large community-driven mapping and data sharing via the app
  • Quick smartphone setup with an intuitive interface
  • Reliable depth accuracy for most freshwater conditions

Cons

  • Battery life on the bobber can fall short of the claimed 10 hours, especially in colder conditions
  • No built-in display; phone screen may be hard to read in bright sunlight or when wet

Best suited for anglers who enjoy mapping new waters and don’t mind occasional Bluetooth hiccups, rather than those needing consistent real-time sonar.

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Best for Early Adopters

Fuceter XF-08 Fish Finder

Fuceter XF-08 Fish Finder

Key Features

  • Depth Range: 2.6–164 ft
  • Display: 3.5" TFT LCD
  • Connectivity: Castable wireless
  • Battery Life: 8 hrs
  • Mount Type: Castable wireless
  • Price: Mid-Range

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The Fuceter XF-08 brings a large 3.5-inch display with adjustable backlighting and a battery that lasts a full day of fishing. Its castable wireless design works from shore, kayak, or ice. A tradeoff worth noting: depth readings may be less consistent when fishing very deep sea water. This is a capable entry for anglers open to trying a newer brand rather than sticking with household names.

Pros

  • Large 3.5-inch TFT display with three backlight modes for use in bright sunlight.
  • Eight-hour battery supports a full day of fishing without recharging.

Cons

  • Depth accuracy may vary in very deep sea conditions — best suited for shallower inland waters.

For anglers who prioritize screen size and battery life over brand pedigree, the Fuceter delivers solid performance at a fair price. It’s a sensible pick for those comfortable with a newer market entrant.

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Best for Occasional Use

LUCKY Portable Fish Finder

LUCKY Portable Fish Finder

Key Features

  • Depth Range: 328 ft
  • Display: 2.4" TFT color
  • Connectivity: Wired (26 ft cable)
  • Battery Life: 5 hrs
  • Mount Type: Thru-hull or portable
  • Price: Budget

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This wired portable fish finder avoids the disconnection issues that plague Bluetooth models, offering a direct sonar feed to a 2.4-inch color display. Setup is straightforward even for first-time anglers, and the lightweight package suits kayak or canoe use. However, the case lacks any meaningful water resistance — moisture can creep under the screen, leading to fogging or electrical issues. Reliability varies between units, with some functioning well for calm-weather trips while others stop working after limited use. Accuracy dips in shallow or weedy water, making it best for open deeper spots. The low entry price reflects these compromises, appealing primarily to anglers willing to accept occasional glitches for minimal upfront cost.

💡 Tip: Store the unit in a dry bag when not in use and avoid exposing it to rain or splashes during the trip.

Pros

  • Wired connection eliminates Bluetooth dropouts common in castable units
  • Color display is easy to read and setup takes minutes
  • Lightweight and compact for carrying in a kayak or small boat

Cons

  • In wet conditions or rain, water can enter the screen area and cause fogging
  • Some units may stop powering on after a handful of uses — worth checking with a flexible return policy

If you fish only in calm, dry weather and want to spend as little as possible on a wired color display, this unit works — just keep a towel handy and treat it as a tool you might replace sooner than a premium alternative.

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Best for Small Boat, Kayak

Humminbird PiranhaMAX 4

Humminbird PiranhaMAX 4

Key Features

  • Depth Range: 600 ft+
  • Display: 4.3" color TFT
  • Connectivity: Wired transducer
  • Battery Life: 7Ah rechargeable
  • Mount Type: Tilt/swivel with case
  • Price: Premium

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The 4.3-inch color TFT screen gives you clear, easy-to-read sonar views that larger boat-mounted units offer, packed into a portable case that is simple to transport and set up on a kayak or small boat. Dual-beam sonar provides useful coverage for open-water fishing. However, the portable design isn’t optimized for ice fishing—the transducer lacks the proper shape for hard water—and the battery compartment can be awkward to access, with terminals susceptible to corrosion over time. Some units may arrive with functionality issues, making it wise to buy from a retailer with a flexible return policy.

💡 Tip: Inspect battery terminals periodically and consider applying dielectric grease to prevent corrosion.

Pros

  • Large 4.3-inch color display provides clear sonar views in a portable kit.
  • Dual-beam sonar offers both wide coverage and detailed bottom structure.
  • Easy to transport and set up from a kayak or small boat.

Cons

  • Some units may arrive with functionality issues; a flexible return policy is advisable.
  • Battery compartment access is awkward and terminals can corrode if not kept dry.

For anglers fishing from a small boat or kayak who want a large screen without a permanent installation, this kit delivers solid sonar at a reasonable cost—just don’t expect it to handle ice or shore casting.

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Best for Short Sessions

Hawkeye FishPod 5X

Hawkeye FishPod 5X

Key Features

  • Depth Range: 199 ft
  • Display: Phone screen
  • Connectivity: Bluetooth to phone
  • Battery Life: Rechargeable
  • Mount Type: Castable with line
  • Price: Budget

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The FishPod 5X delivers accurate depth readings and pairs quickly with a smartphone app, making it a straightforward option for anglers wanting a portable fish finder without a dedicated display. At this price point, the value is clear for casual use. However, some units may develop battery issues over time, where the device no longer holds a charge. Bluetooth connectivity can also drop mid-session, and running the app drains phone battery notably. These limitations mean the FishPod suits quick trips where you can charge between outings, but not for consistent repeated use.

💡 Tip: Fully charge the FishPod before each outing and carry a portable phone charger to manage app battery drain.

Pros

  • Accurate depth readings when the sonar is active
  • Easy setup and use via smartphone app
  • Budget-friendly price for a portable Bluetooth fish finder

Cons

  • Battery may lose ability to hold a charge after a short period of use
  • Bluetooth connection can drop intermittently during fishing

A sensible choice for anglers who fish in short sessions and can charge the unit after each use, but not for those needing consistent performance trip after trip.

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Best for Kayak, Canoe, Ice

HawkEye Fishtrax 1C

HawkEye Fishtrax 1C

Key Features

  • Depth Range: 240 ft
  • Display: 2.75" color LCD
  • Connectivity: Wired transducer
  • Battery Life: 4 AAA (5 hrs)
  • Mount Type: Panel or portable
  • Price: Mid-Range

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The Fishtrax 1C keeps things simple: a color screen, flasher mode, and accurate depth/temperature readings without needing a smartphone. That’s a direct trade-off against the top-pick Garmin Striker 4, which adds GPS and CHIRP sonar in a larger 3.5-inch display. Anglers who don’t need mapping or ultra-fine detail will appreciate the HawkEye’s lighter weight and lower price — but the 2×1.6-inch active screen area means you’ll get a snapshot of one fish at a time, not a full picture of the bottom.

This is a good fit for kayak, canoe, and ice fishers who want a simple, dedicated display that doesn’t rely on phone batteries or Bluetooth. The flasher mode works well for ice fishing, though only in water deeper than 3.5 feet. The small screen is best for quick glances; if you need to track multiple targets or see fine structure, the top pick is a better match.

💡 Tip: Lithium AAA batteries help maintain power in cold conditions and reduce the chance of contact slip in the battery holder.

Pros

  • Weighs under 8 oz with batteries — easy to carry in a kayak or ice sled.
  • Color LCD with flasher mode for ice fishing, without needing a phone.
  • Depth and temperature readings are consistent within its 240 ft range.
  • Cost-effective compared to portable units with GPS or CHIRP sonar.

Cons

  • Screen (2×1.6 inches) can be hard to read in bright sunlight or for multiple fish.
  • Battery contacts may slip, causing intermittent power loss — worth checking before each trip.
  • Does not provide readings in water shallower than 3.5 feet.

If you fish deeper than 3.5 feet and value portability over screen size, the Fishtrax 1C is a straightforward, no-surprises choice — just keep your expectations on screen detail in check.

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How to Choose

The single most important buying insight is that advertised Bluetooth range is often cut in half in real-world conditions, making dedicated-display units more reliable for many anglers.

Depth Range and Accuracy

Depth range is the first spec most buyers check, but real-world accuracy matters more. A unit that claims 300 feet but delivers erratic readings past 100 is less useful than a 150-foot unit with consistent returns. Deeper water often requires a wider sonar beam to cover more area, but that also reduces target separation. For most freshwater fishing, a reliable 100-150 foot range covers lakes and rivers well. If you fish very deep reservoirs or saltwater, look for units with demonstrated performance at those depths – not just a spec sheet number.

Display Type and Sunlight Visibility

Smartphone-based fish finders offer large, vibrant screens, but they come with a hidden cost: the phone must stay on and bright enough to see outdoors. This drains your phone battery quickly and can be hard to read in direct sunlight without maximum brightness. Dedicated handheld displays, even small ones, are purpose-built for outdoor visibility – many offer white-background modes to fight glare. The trade-off is a smaller screen area, which can make reading multiple fish arches or fine detail harder. Your choice depends on whether you value screen size or battery independence.

Connectivity: Wired vs. Wireless

Wireless castable units are convenient – no cables to manage – but the connection quality depends heavily on Bluetooth or Wi-Fi range and stability. In practice, Bluetooth drops at distances well under 100 feet, especially in choppy water or with interference. Wired transducers, like those on the Garmin Striker 4, provide a rock-solid connection with no pairing fuss, but the cable limits mobility and can be a tripping hazard in a kayak. For shore fishing where you move frequently, wireless is ideal if the connection holds. For stationary use from a boat or ice hole, wired is more reliable.

Another factor: phone battery drain. Wireless units that rely on your phone for display can drain it in a few hours, especially if the screen stays on. Dedicated-display wireless units avoid this, but they add weight and cost.

Battery Life and Charging

Battery life is the most common point of failure in budget fish finders. Many use sealed rechargeable batteries that can’t be replaced when they stop holding a charge – a pattern reported after just a few months. Look for units that use standard batteries (like AAA) or have user-replaceable rechargeable packs. For long days on the water, aim for at least 8-10 hours of real-world runtime. Also consider charging method: USB-C is faster and more universal than barrel connectors. If you ice fish, cold temperatures reduce battery capacity – lithium batteries handle cold better than standard ones.

Mounting and Portability

How you mount the fish finder determines where and how you can use it. Castable units are the most portable – they float and can be thrown from shore or dropped through an ice hole. But they require you to keep the receiver (phone or dedicated screen) within wireless range. Transducer-on-a-cable designs let you hang a sensor over the side of a kayak or boat, offering deeper readings and no connection issues, but they are harder to move quickly. Portable kits with suction-cup or clamp mounts work well on boats and ice shacks but take up more space in a backpack.

For anglers who switch between shore, kayak, and ice, a castable unit with a dedicated display is the most versatile. If you primarily fish from a single location, a wired portable kit offers better value and reliability.

Common Mistake: Assuming all wireless fish finders have the same Bluetooth range – always check real-world user reports rather than trusting the manufacturer’s number, which is often measured under ideal lab conditions.

FAQ

Why does my portable fish finder lose connection at 50 feet when it claims 200 feet?

Most fish finders advertise Bluetooth range under ideal conditions – no obstacles, perfect line-of-sight, and dry weather. On the water, factors like water absorption, transducer wobble, and interference from your phone or other electronics cut that range by half or more. If you regularly fish beyond 60 feet from your device, choose a unit with a dedicated display that doesn’t rely on a phone connection.

Is a wired or wireless fish finder better for kayak fishing?

For a kayak, wireless castable units are convenient because there are no cables to tangle, but you must stay within Bluetooth range. Wired units with a fixed transducer mounted on the kayak hull provide more consistent readings and no connection drops. If you frequently move or fish from shore access points, wireless is fine. For serious kayak fishing where you want reliable sonar all day, a wired portable kit like the Garmin Striker 4 is the safer bet.

Can I use a castable fish finder for ice fishing?

Yes – most castable fish finders work through the ice if you drop the sensor into the hole. However, for the best ice fishing experience, look for a unit with a dedicated flasher mode (like the Garmin Striker Cast or HawkEye Fishtrax 1C) that shows jigging reactions in real time. Also ensure the battery can handle cold temperatures – lithium-ion batteries perform better than standard ones in freezing conditions.

What does a fish finder’s beam angle mean for how much water I can scan?

A wider beam angle (like 47°) covers a larger cone of water but shows fish and structure less distinctly. A narrow beam (like 7°) provides high-detail target separation but covers a smaller area. For general fishing, a 20° beam is a good balance. Multi-beam units let you switch between angles depending on whether you’re searching wide or focusing on a specific spot.

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