Photos: Deeper · supplied retailer imagery
Fish finders · Swim mapping · Our take
Deeper CHIRP+ 2 Sonar
CHIRP+ 2 Sonar
Small, clever and seriously useful, the Deeper CHIRP+ 2 gives you a detailed look under the surface without dragging a boat into the swim.
- Three-frequency CHIRP sonar uses narrow, medium and wide beams for different jobs.
- The narrow 7° beam offers target separation down to 1 cm for detailed spot-finding.
- Built-in GPS mapping works through the Deeper app, with Wi-Fi range up to 120 m.
- Battery life is up to 9 hours with GPS or up to 15 hours without it.
Make sure it’s the right one. This review covers the Deeper CHIRP+ 2 Sonar, the 65 mm, 90 g castable Wi-Fi fish finder with three-frequency CHIRP scanning and built-in GPS functionality.
Tackle Index Score
Tackle Index score
A high-spec castable sonar that offers serious information for anglers prepared to put the work in.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9.4/10
- Performance9.7/10
- Impact on Fish Catching9.2/10
- Ease of Use8.4/10
- Value for Money8.8/10
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Who it suits
Is it right for you?
Great for
- Bank anglers exploring unfamiliar lakes. You can map depth, contours and likely areas without needing a boat or bait boat.
- Carp and coarse anglers who like to fish accurately. The different beams help you move from broad water searching to a much tighter look at a chosen spot.
Maybe skip if
- Anglers who want a totally hands-off gadget. You’ll need to cast, retrieve, read the display and make sense of the returns.
- Very snaggy or heavily weeded swims. Repeated retrieval can be awkward where the sonar may catch up in weed or contact underwater obstructions.
The lowdown
Introducing the Deeper CHIRP+ 2 Sonar
Small, clever and seriously useful, the Deeper CHIRP+ 2 gives you a detailed look under the surface without dragging a boat into the swim.
- Three-frequency CHIRP sonar uses narrow, medium and wide beams for different jobs.
- The narrow 7° beam offers target separation down to 1 cm for detailed spot-finding.
- Built-in GPS mapping works through the Deeper app, with Wi-Fi range up to 120 m.
- Battery life is up to 9 hours with GPS or up to 15 hours without it.
Quick verdict
Verdict
The Deeper CHIRP+ 2 is a cracking bit of kit for anglers who want to understand a lake before committing rods and bait. Its three CHIRP frequencies, tight narrow beam and detailed mapping make feature-finding much less of a guessing game.
It won’t replace proper watercraft, and you’ll still need to interpret what the screen is telling you. But for locating depth changes, weed, clean areas and likely patrol routes from the bank, it’s a powerful and genuinely handy tool.
A high-spec castable sonar that offers serious information for anglers prepared to put the work in.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9.4/10
- Performance
- 9.7/10
- Impact on Fish Catching
- 9.2/10
- Ease of Use
- 8.4/10
- Value for Money
- 8.8/10
The compact ABS body, titanium inserts, rechargeable battery and tidy accessories make it a well-equipped bit of kit.
Three CHIRP frequencies, fast scanning, multiple beam angles and detailed target separation give it strong capability.
Better knowledge of depth, features and likely patrol routes can lead to more accurate, confident fishing.
The concept is straightforward, but getting the best from mapping and sonar returns takes practice.
For anglers who regularly fish new or tricky waters, the amount of information and repeat-use mapping potential is strong.
Head to head
How it stacks up
Side by side with the closest kit we've reviewed. This updates as we add more reviews.
Deeper
Deeper CHIRP+ 2 Sonar (this one)
Top scorer
Top scorer
Top scorer
Scores are our own, out of 10. Best in each row is in green. Prices change, so check the latest before you buy.
The full rundown
Everything you'll want to know about the Deeper CHIRP+ 2 Sonar
Some bits of tackle make you fish harder. The Deeper CHIRP+ 2 should help you fish smarter. This little castable sonar gives you a proper look beneath the surface, helping turn a blank-looking swim into a map of depths, drop-offs, weed and cleaner areas.
At just 90 g and 65 mm across, it’s not some massive lump of electronics that’ll take over the barrow. You can carry it in the pouch, clip it to a suitable setup and cast it around the swim. That makes it especially appealing when you’re fishing from the bank and haven’t got a boat or bait boat to do the donkey work.
The clever bit is the three-frequency CHIRP sonar. You get a narrow 675 kHz beam, a medium 240 kHz beam and a wider 100 kHz beam. In plain English, that gives you different ways to search. The wide beam helps scan a bigger area, while the narrow beam focuses on the sort of detail that matters when you’re trying to find a proper little spot for a rig.
The narrow beam is only 7°, with target separation down to 1 cm. That’s the sort of detail that can help separate a small feature from general lakebed clutter. The medium beam is 20°, while the wide beam opens out to 47°. So you can start broad, then tighten things up once something catches your eye. Dead handy when the rods are off and you’re doing a bit of homework.
Depth coverage runs from 15 cm down to 100 m, which is far more than most coarse and carp situations will need. The useful point isn’t chasing extreme depth, though. It’s being able to see how the bottom changes as you work across a swim. A small shelf, a trough in front of the island or a clean patch in weed can all become much easier to identify.
The built-in GPS adds another useful layer. You can build maps rather than relying on one quick glance at the screen. That means you can compare areas, remember a productive-looking contour and return to a spot with a better idea of where to put the bait. It won’t do the thinking for you, but it can make your thinking sharper.
Connection is handled over Wi-Fi, with a stable range of up to 120 m. Battery life is up to nine hours with GPS running, or up to 15 hours without it. That’s enough for a serious bit of mapping, a few spot checks through a session or a handy look around before you settle on a plan. Just remember to charge it before heading off, mate.
The box is nicely sorted too. You get the sonar, USB wire, neoprene pouch, two attachment bolts, quick guide, safety information and a night-fishing cover. The ABS enclosure with titanium inserts is built for regular fishing use, while the compact shape keeps it fairly unobtrusive on the bank.
There is a learning curve, naturally. A sonar return is information, not magic. You still need to understand your lake, watch the conditions and use a lead or marker where appropriate. Used that way, the CHIRP+ 2 is a proper confidence-builder: less random chucking, more deliberate fishing and a much clearer idea of what’s happening under the surface.
Specifications
The nuts and bolts
- Weight
- 90 g / 0.2 lb
- Size
- 65 mm diameter
- Sonar
- Three-frequency CHIRP
- Frequencies and beams
- 675 kHz / 7° narrow; 240 kHz / 20° medium; 100 kHz / 47° wide
- Depth range
- 15 cm to 100 m
- Battery
- Rechargeable 3.8 V Li-Ion, 1300 mAh; up to 9 hours with GPS or 15 hours without
Specs checked with Deeper, Oct 2026.
Spot a model or spec change?
Our take
The angle
This isn’t just about spotting a fish icon and launching a rig at it. The real value is building a picture of the swim: depth, bottom shape, weed and hard spots. That can turn a blank-looking margin into a much more confident plan of attack.
The CHIRP+ 2 suits the angler who likes doing the homework. Cast it around, map the area, compare returns and then fish with purpose rather than lobbing three rods at random. Proper useful when the lake’s new, pressured or a bit featureless.
Closer look
A tiny sonar with plenty going on
The CHIRP+ 2 packs three frequencies into a compact 65 mm body. The wide 47° beam is your searching tool, the 20° medium beam gives a more balanced view, and the 7° narrow beam is the one to reach for when you’re homing in on a likely spot. That combination makes it more versatile than a basic single-beam fish finder.
It works with a phone over Wi-Fi, while GPS mapping helps record depth and contours. The unit scans at up to 15 times per second, so you can build a useful picture as it moves across the lakebed. The 15 cm to 100 m depth range covers pretty much any coarse or carp venue you’re likely to tackle.
Worth knowing. The best results come from fishing it methodically. Scan wide first, note anything interesting, then use the narrower beam to investigate. Don’t simply chase the biggest-looking return on the screen; match what you see to the lake, the season and where fish are likely to feed.
Who it suits
For anglers who like a bit of homework
This is bob on for bank anglers faced with an unfamiliar lake, a new ticket water or a swim that looks annoyingly featureless. It can help you find changes in depth, weed edges and cleaner areas before you commit three rods and a load of bait. That’s particularly useful when the fish are pressured and obvious features get hammered.
It also suits anglers who enjoy building a picture over several visits. Use GPS to map an area, return in different conditions and compare what the water is doing. You’ll still need watercraft, but the sonar can add another layer to the decision-making.
Worth knowing. It’s less suited to a quick, carefree session where you don’t fancy repeated casting and retrieving. Around dense weed, snags or tight swims, think carefully about how you attach and recover it. Keep things controlled and don’t launch it where you wouldn’t be happy retrieving a rig.
FAQs in full
The questions anglers usually ask
It can display fish returns, but the sensible approach is to use those alongside depth, bottom and feature information. A fish symbol isn’t a guaranteed bite. Location, timing and presentation still decide whether you bag up.
Up to nine hours with GPS enabled, or up to 15 hours without GPS. Your actual running time depends on settings and conditions, so charging it before a session is the smart move.
Yes. The package includes a night-fishing cover, making it suitable for after-dark mapping and spot checks. As ever, be sensible with casting, retrieval and nearby anglers.
On paper
Pros & cons
What we like
- Excellent detail from the three CHIRP frequencies and multiple beam angles.
- The narrow beam is dead handy for pinpointing clean spots and tight features.
- Compact 90 g design is easy to cast and retrieve without lugging bulky kit.
- GPS mapping helps you build a proper picture of depth and contours over time.
- Night-fishing cover and neoprene pouch are useful little touches.
Worth knowing
- You need a phone and the Deeper app to get the full benefit from the sonar.
- Casting and retrieving it repeatedly can be a faff on some swims, especially in weed or snags.
- The useful mapping potential depends on putting in the time rather than expecting instant answers.
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Your questions answered
What anglers want to know
The stuff you’d ask your mate on the next peg. Straight answers, no waffle.
01Can the Deeper CHIRP+ 2 find weed and bottom features?
Can the Deeper CHIRP+ 2 find weed and bottom features?
Yes. Its different beam angles and CHIRP detail can help show changes in depth, weed and bottom composition. Treat the display as useful information, then confirm the story with careful plumbing and your rig if needed.
02How far can the Deeper CHIRP+ 2 connect to a phone?
How far can the Deeper CHIRP+ 2 connect to a phone?
Its Wi-Fi connection has a stable range of up to 120 m in suitable conditions. Real-world range can vary with the swim, obstructions and interference.
03Is it suitable for night fishing?
Is it suitable for night fishing?
Yes. The box includes a night-fishing cover, and the sonar can be used for session planning and spot checks after dark. Keep your casting and retrieval sensible around snags and other anglers.
What anglers say
The word from the bank
Our read: verdict. The strongest reasons to choose it are excellent detail from the three chirp frequencies and multiple beam angles. and the narrow beam is dead handy for pinpointing clean spots and tight features.; the main trade-off is you need a phone and the deeper app to get the full benefit from the sonar..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Excellent detail from the three CHIRP frequencies and multiple beam angles.”
Best fit
Checked Sept '26 — “Bank anglers exploring unfamiliar lakes: You can map depth, contours and likely areas without needing a boat or bait boat.”
Worth knowing
Checked Sept '26 — “You need a phone and the Deeper app to get the full benefit from the sonar.”
Tackle Index’s take from the product details and fishing fit we checked. We haven’t found enough independent public feedback to call this an angler consensus yet.
Angler score
What our readers rate Deeper CHIRP+ 2 Sonar
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Owner reports
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Quick multiple-choice reports from people who say they own the Deeper CHIRP+ 2 Sonar. Not verified purchases, and kept separate from our score.
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