Garmin Striker Cast Review: Castable Sonar With or Without GPS
Our Garmin Striker Cast review compares the GPS and non-GPS versions: sonar beams, 150 ft depth range, app pairing, battery, ice fishing use, and limits.
Updated October 31, 2026
The Garmin Striker Cast is a castable sonar: a 2.6 oz float, per Garmin, that you clip to a fishing line or the included tether, toss out, and read on your phone through the free Striker Cast app. Garmin sells two versions with the same sonar and app: the Striker Cast (part 010-02246-00) and the Striker Cast GPS (part 010-02246-02), which adds a GPS receiver for recording your own contour maps.
Our verdict: it suits shore, dock, kayak, and ice anglers who want depth, water temperature, and fish returns without a mounted unit, and who accept a phone as the screen and a 150 ft depth limit. This review is based on research, not our own trials.
This guide is general product information, not repair or electrical safety advice. Follow the installation, wiring, and charging instructions in your product’s manual, stop using any battery, charger, or electronics that overheat, swell, or smell of burning, and contact the manufacturer.
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Garmin Striker Cast Castable Sonar
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Garmin Striker Cast GPS Castable Sonar
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Garmin Striker Cast at a Glance
Figures come from Garmin’s pages for both versions and the owner’s manual; where the Amazon listings disagree, the table uses Garmin’s figure.
| Spec | Striker Cast (no GPS) | Striker Cast GPS |
|---|---|---|
| Sonar | Traditional dual-frequency sonar, 260 and 455 kHz; oval beams of 22 x 63 degrees at 260 kHz and 9 x 14 degrees at 455 kHz (manual) | |
| Depth range | Under 2 ft to 150 ft (manual) | |
| Wireless range | 200 ft (60 m) over Bluetooth; water conditions can affect it | |
| Views in the app | Traditional 2-D sonar and ice fishing flasher, plus A-scope, fish symbols, and water temperature | |
| GPS and maps | No GPS; can download Quickdraw Community maps with 1 ft contours | GPS with WAAS; records your own Quickdraw Contours maps; spec page lists 5,000 waypoints |
| Battery | Built-in lithium-ion, 10 hours typical use, about 1.5 hours to charge over USB | |
| Temperature limits | Operates from -4°F to 140°F; charges from 41°F to 104°F (manual) | |
| Size, weight, water rating | 3 x 2.97 x 2.28 in, 2.6 oz (75 g), IPX7, floats; 16.4 ft tether included | |
What We Like
- Nothing to mount or wire; the float moves from dock to kayak to ice hole in its bag.
- Two frequencies with very different beam widths, one for searching and one for bottom detail.
- An ice fishing flasher view and a scrolling 2-D view in the same app.
- It powers on in water and off on its own.
- Garmin’s stated 10 hour battery figure is longer than the runtime Deeper states for either castable compared below.
What Could Be Better
- Your phone or tablet is the only screen, and the app needs a Garmin account sign-in.
- Its 150 ft depth limit is shallower than the 100 m (about 330 ft) Deeper lists for the PRO+ 2.
- Contour recording and lost-float help are limited to the GPS version.
- The Amazon listings disagree with Garmin: both list an LCD display for a sonar that uses your phone as its screen, both name a 20 ft tether where Garmin lists 16.4 ft and give different item dimensions, and the GPS listing gives a 200 ft maximum depth where the manual lists 150 ft.
Garmin Striker Cast GPS or No GPS: Which Version to Buy
Garmin gives both versions the same size, battery, sonar, and streaming range. Only the Striker Cast GPS page lists GPS with WAAS support, 5,000 waypoints, and Quickdraw Contours, which Garmin says lets you create your own maps with 1 ft contours; the manual does not limit its waypoint steps to GPS models. The page for the version without GPS also points to the Garmin Quickdraw Community, where you can download contour maps other anglers have shared.
Recording a map needs sonar depth and GPS position, per the manual, so only the GPS version can build one. While it records, the app draws a colored circle on the map: green for good depth, GPS position, and speed; yellow when you move a little too fast; red for poor data or too much speed. Per the manual, the float stays on while it is in the water, which can help you find a lost one on the app map (GPS models only).
Choose the version without GPS for the same pond, dock, or ice spot. Choose the GPS version if you want to record a contour map as you fish (the manual lists towing behind a kayak among the ways to use it), or cast near snags and current where losing it is a real risk.
Phone, App, and Connection
Garmin says the Striker Cast pairs with a free app on Apple or Android phones and tablets. Per the manual, you install the app, sign in to a Garmin account, wake the float in water or with USB power, and pick it by the serial number on its bottom. The app connects to one Striker Cast at a time.
The link is Bluetooth, with a wireless range of 200 ft that the manual says water conditions can affect. One owner of the version without GPS calls the connection “less than great” and doubts it reaches the full 200 ft, so start with shorter casts.
Garmin Striker Cast Sonar: What a Castable Can and Cannot Show
Garmin’s spec page lists traditional dual-frequency sonar with fish symbols, an A-scope, and a water temperature log, and no down or side imaging mode. Per the manual, the narrow 455 kHz beam handles rough conditions better and can sharpen bottom detail, while the wide 260 kHz beam covers more area and reaches deep water better, with more surface noise.
A castable reads only the water under the float, and the manual recommends repeated casting for the clearest view. If no returns appear, an air bubble may be trapped on the pins, so re-cast or tug the line. Treat fish symbols as a guide, not a count: an owner of the version without GPS, fishing clear water about 9 ft deep from a kayak, saw marks for things not visible on the bottom. Turn symbols off or use the A-scope to judge returns yourself.
Casting, Tethering, and Towing
The manual describes three ways to fish it: cast it on a dedicated rod, tie it off with the included tether, or tow it behind a kayak or canoe. For casting, Garmin calls for 20 lb or heavier line, a #3 barrel swivel with a snap, and a medium-action or heavier rod. It advises against towing behind power boats underway and cautions that towing faster than 5 mph or in choppy water can cause poor sonar performance and injury.
Owners of the version without GPS describe the same setups: one kayak angler uses the tether because a second rod is awkward in a small cockpit, another keeps a dedicated rod and reel with heavy braid, and a third pairs braided line with a heavy-duty swivel so the float is not lost.
Battery, Charging, and Cold Weather
The manual lists a built-in lithium-ion battery with 10 hours of typical use and about 1.5 hours to charge from a USB wall outlet, computer port, or vehicle charger (no adapter is included). Garmin says to clean and dry the contacts before charging, never store the float in water, and follow the battery warnings in the safety guide in the box.
On the ice, the two temperature limits matter: Garmin lists operation from -4°F but charging only from 41°F to 104°F, so arrive fully charged and let the float dry and warm up before plugging it in.
What Owners Say About the Version Without GPS
These comments come only from owner reviews on the Amazon listing for the version without GPS.
- Setup: several owners say pairing was simple. One first-time fish finder owner had to turn on fish symbols before the screen made sense.
- Where they use it: banks and docks, kayaks, small boats, and the ice. Of two short reviews from ice anglers, one reports no complaints and the other calls it easy to use.
- Readings: one owner calls the water temperature and depth accurate; the clear-water kayak owner trusts only those two readings.
- GPS or not: one kayak angler skipped GPS because the phone’s own map is open anyway, while another thinks the GPS version could be worth it if the float were lost.
- Complaints: one ice angler found it picks up interference near other sonar, and another warns that the charging cable’s device end is not a standard USB plug, so keep it safe (Garmin sells replacements, per the manual).
How the Garmin Striker Cast Compares
Here it is against the Deeper PRO+ 2 and Deeper Start. Each row uses the maker’s own figures and wording, from Garmin and from Deeper’s pages for the PRO+ 2 and the Start.
| Maker figure | Garmin Striker Cast | Deeper PRO+ 2 | Deeper Start |
|---|---|---|---|
| Connection and stated range | Bluetooth, 200 ft (60 m) | Wi-Fi, stable up to 100 m | Wi-Fi, at least 50 m (165 ft), depending on the phone |
| Depth range | Under 2 ft to 150 ft | 15 cm to 100 m (about 330 ft) | 0.5 m to 50 m (1.6 to 165 ft) |
| Beams | 260 kHz (oval, 22 x 63 degrees) and 455 kHz (oval, 9 x 14 degrees) | 100 kHz (cone, 47 degrees), 240 kHz (cone, 20 degrees), 675 kHz (cone, 7 degrees) | Single 120 kHz cone, 40 degrees |
| Positioning | GPS version only | GPS, GLONASS, Galileo, BeiDou, QZSS | Not listed |
| Battery runtime | 10 hours typical | Up to 9 hours | Up to 6 hours |
| Charge time | About 1.5 hours | 100% in 75 minutes | 2.5 hours |
| Operating temperature | -4°F to 140°F | -4°F to 104°F | 32°F to 104°F |
Against the PRO+ 2, the Striker Cast lists the longer runtime figure, though Garmin’s is typical use and Deeper’s is “up to,” while the PRO+ 2 lists more than twice the depth range, a longer stated connection range, and three beams, including a 7 degree beam against Garmin’s narrowest at 9 x 14 degrees. For deep reservoirs, the PRO+ 2 fits better on paper. Against the Start, the Striker Cast lists two frequencies instead of one, a longer runtime, and operation below freezing (Deeper rates the Start from 32°F).
Who Should Look Elsewhere
- Anglers who fish deeper than 150 ft or want three beams: the Deeper PRO+ 2 lists both.
- Anyone who wants down or side imaging, a built-in screen, or sonar while running a power boat. Mounted units and other castables are covered in our roundup of the best fish finders and in the Fish Finders section.
- Ice anglers who fish close to other sonars, given one owner’s report of interference, or who prefer a dedicated flasher with its own dial. Our ice fishing fish finder options cover flashers and portable kits.
- Anyone who does not want a phone in hand while fishing.
Why You Should Trust Us
We do not conduct our own product trials. This review draws on Garmin’s pages for both versions, the owner’s manual, Deeper’s pages, the two Amazon listings, and the owner reviews on the listing for the version without GPS. Each AnglerTechLab Score starts from Amazon owner ratings. We lowered each version’s score by 0.2 for listing details Garmin does not support: both listings name an LCD display, although the sonar shows its readout in a phone or tablet app, and the GPS listing also gives a 200 ft maximum depth while Garmin’s manual lists 150 ft. Each listing carries a single deduction. We earn a commission from qualifying purchases, and commissions never affect our rankings, recommendations, or scores. You can read the full method on our How We Review page.
Final Verdict
The Garmin Striker Cast puts basic 2-D sonar and an ice flasher on your phone with nothing to mount or wire, and its stated battery figure is the longest of the three castables compared here. Its limits are the 150 ft depth range, the lack of imaging, and the phone as the screen. Choose the GPS version only if you will record your own contour maps or worry about losing the float.
Frequently Asked Questions
Does the Garmin Striker Cast have GPS?
Only the Striker Cast GPS, a separate version that adds a GPS receiver and Quickdraw Contours recording. The version without GPS can download shared maps but cannot record its own.
How deep does the Garmin Striker Cast castable sonar read?
Garmin’s manual lists less than 2 ft to 150 ft for both versions. The GPS listing on Amazon shows 200 ft, a figure that matches Garmin’s wireless range, not its depth range.
What phone do you need for the Striker Cast fish finder?
An Apple or Android device with the free Striker Cast app and a Garmin account, per Garmin; its pages do not list minimum models.
Can you use the Garmin Striker Cast for ice fishing?
Yes. Garmin lists an ice fishing flasher mode and operation down to -4°F; see the charging limits above.
How long does the Striker Cast battery last?
Garmin lists 10 hours of typical use, varying with use.
About the author
Mason McKinney enjoys fishing Minnesota's lakes for crappie, walleye, and other freshwater species. He uses forward-facing sonar, GPS fish finders, and spot-lock trolling motors to locate fish around underwater structures and maintain precise boat positioning.