Photos: Deeper · supplied retailer imagery
Predator tools · Castable sonar · Our take
Deeper CHIRP+ 2 Smart Sonar
Full review
A compact castable sonar with GPS mapping, three CHIRP frequencies and enough detail to make finding predator spots far less of a guessing game.
- 90 g castable sonar with an ABS enclosure and titanium inserts.
- Three-frequency CHIRP sonar, with narrow, medium and wide cone options.
- Depth range from 15 cm down to 100 m.
- Up to 9 hours’ operation with GPS on, or up to 15 hours with GPS off.
Make sure it’s the right one. This review covers the Deeper CHIRP+ 2 Smart Sonar, the 90 g castable CHIRP model with built-in GPS and three selectable frequency bands.
Tackle Index Score
Tackle Index score
A feature-packed castable sonar that earns its high-value tag through useful CHIRP control and GPS mapping.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9.2/10
- Performance9.6/10
- Impact on Fish Catching9/10
- Ease of Use8.4/10
- Value for Money8.9/10
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Who it suits
Is it right for you?
Great for
- Bank-based pike and perch anglers. You can search depth, weed and structure from the bank before committing to a swim or presentation.
- Anglers fishing unfamiliar venues. The GPS mapping side helps build a useful picture of contours and repeatable spots over several visits.
Maybe skip if
- Anglers who want a completely screen-free session. The sonar’s information is designed to be viewed through a connected phone or tablet.
- Boat anglers already running a full-size fish finder. A proper fixed unit will generally be more convenient for continuous boat-based searching and live viewing.
The lowdown
Introducing the Deeper CHIRP+ 2 Smart Sonar
A compact castable sonar with GPS mapping, three CHIRP frequencies and enough detail to make finding predator spots far less of a guessing game.
- 90 g castable sonar with an ABS enclosure and titanium inserts.
- Three-frequency CHIRP sonar, with narrow, medium and wide cone options.
- Depth range from 15 cm down to 100 m.
- Up to 9 hours’ operation with GPS on, or up to 15 hours with GPS off.
Quick verdict
Verdict
The Deeper CHIRP+ 2 is a clever bit of kit for anglers who want to see what’s happening under a float, lure or bait without lugging a boat fish finder around. The three CHIRP beams give you useful flexibility, from a tight look at structure to a wide sweep for finding fish and depth changes.
It won’t replace proper boat electronics for covering huge areas, and you’ll need a phone or tablet to get the full benefit. But for bank-based predator work, feature finding and checking unfamiliar water, it’s a cracking high-value tool with very little faff once you’re set up.
A feature-packed castable sonar that earns its high-value tag through useful CHIRP control and GPS mapping.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9.2/10
- Performance
- 9.6/10
- Impact on Fish Catching
- 9/10
- Ease of Use
- 8.4/10
- Value for Money
- 8.9/10
The ABS body, titanium inserts, pouch and supplied accessories make it feel properly equipped for regular bank use.
Three CHIRP bands, fast scanning and a broad 15 cm to 100 m depth range give it serious searching ability.
It can reveal depth changes, weed and structure that help you place lures or baits with more purpose.
The cast-and-retrieve idea is simple, but carrying a phone, managing Wi-Fi and mapping adds some faff.
For a compact unit with GPS mapping, three beams and strong separation figures, the feature set is bob on for a high-value tool.
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 Smart Sonar (this one)
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 Smart Sonar
Finding fish is only half the battle. First, you’ve got to find the water they actually want to sit in. That’s where the Deeper CHIRP+ 2 Smart Sonar comes in. It’s a castable fish finder that lets you scan from the bank, map the bottom and get a much clearer idea of what’s going on below the surface.
For predator anglers, that’s proper handy. Pike and perch aren’t obliged to park themselves in the obvious bit of water just because you fancy fishing it. A small depth change, a weed edge or a hard patch can be the difference between a blank and a screaming take, especially when the weather or water level has shifted.
The CHIRP+ 2 keeps things compact at just 90 g, so it’s not a great lump to lob around while you’re mobile. Cast it out, bring it back steadily and use the connected app to inspect the returns. You can work along a margin, fan casts across a bay or check a likely drop-off without dragging a boat onto the scene.
Its big trick is the three-frequency CHIRP sonar. The narrow beam uses 675 kHz and a tight 7° cone, giving you a more focused view of a specific patch. That’s useful when you’ve already found something interesting and want to have a proper nose around it.
The medium beam runs at 240 kHz with a 20° cone, while the wide beam uses 100 kHz and a broad 47° cone. In plain English, the wide setting helps you cover more water, and the narrow setting helps you pick apart what’s underneath. That switch between searching and checking is the real appeal.
Target separation is impressive on paper too: 1 cm with the narrow CHIRP and 2.4 cm with the medium and wide options. You’re not just looking for some vague blob on the screen. That extra detail should help when you’re trying to make sense of weed, bottom changes and possible fish returns close to the deck.
There’s built-in GPS for mapping, which is a cracking feature if you fish the same venue regularly. You can build up a picture of depth changes and mark areas that deserve another look. Find a productive shelf or a deeper pocket, and you’ve got something useful to return to rather than relying on a fuzzy memory and a few bank markers.
Battery life is up to 9 hours with GPS on, stretching to up to 15 hours with GPS off. That should cover a decent day chasing predators, though cold winter sessions and constant mapping will make you keep an eye on the charge. The Wi-Fi connection is stable up to 120 m, giving you plenty of room to search from the bank.
The casing uses ABS with titanium inserts, and the box includes a USB cable, neoprene pouch, two attachment bolts and a night-fishing cover. Those extras aren’t flashy, but they make the whole package feel ready for proper bank work. If you’re serious about understanding a venue before putting a lure or bait in the water, this is a very capable bit of kit rather than a novelty gadget.
Specifications
The nuts and bolts
- Weight
- 90 g
- Depth range
- 15 cm to 100 m
- Sonar
- Three-frequency CHIRP
- Cone angles
- 7° narrow, 20° medium, 47° wide
- Battery
- Rechargeable 3.8 V Li-Ion, 1300 mAh
- Connection
- Wi-Fi, stable up to 120 m
Specs checked with Deeper, Oct 2026.
Spot a model or spec change?
Our take
The big angle
This is less about staring at a pretty fish icon and more about building a picture of the swim. Cast it around, compare depths, look for drop-offs and hard spots, then use the GPS mapping to remember where the good-looking water is.
For pike and perch anglers, that can be a serious edge. Find the shelf, the weed edge or the deeper bowl, then put your offering where the water actually looks promising rather than chucking on hope and a prayer.
Closer look
A compact sonar with a useful spread of beams
The Deeper CHIRP+ 2 is built around choice. Start wide to scan a bay or margin, move to medium when you’ve got a likely area, then use narrow to inspect a feature properly. That workflow makes sense on the bank and stops you wasting ages staring at the wrong patch of water.
The GPS mapping is especially useful for repeat visits. You can learn the venue gradually, noting shelves, holes, weed lines and bottom changes. The sonar can scan at up to 15 times per second, while target separation goes down to 1 cm on the narrow beam.
Worth knowing. GPS uses more battery. You’re looking at up to 9 hours with it on, compared with up to 15 hours with GPS off, so charge it before a long winter mission and carry a power bank if you’re mapping all day.
Who it suits
Best used as a watercraft tool
This makes most sense for mobile predator anglers who fish canals, reservoirs, pits and rivers where the contours aren’t obvious. Use it to find a depth change, locate the edge of a weed bed or compare the near margin with the water farther out.
It’s also a strong option for anglers who fish a handful of venues repeatedly. A single scan tells you something; a collection of maps tells you far more. Keep notes on water level, season and conditions, then match the sonar picture with where the fish actually want to be.
There is a bit of faff. You need a phone or tablet, a charged sonar and enough room to cast and retrieve safely. In heavy weed, snags or cramped urban swims, it may be more trouble than it’s worth. In an open swim, though, it’s dead handy.
FAQs in full
What to know before you buy
The 15 cm minimum depth means it can work in very shallow margins, while the stated maximum depth reaches 100 m. Most predator anglers won’t come close to that deeper figure, but the broad operating range gives you plenty of flexibility across different venues.
The enclosure is ABS with titanium inserts, and the operating temperature range runs from -20°C to 40°C. That’s useful for year-round fishing, particularly when you’re out chasing a winter lump and your fingers are doing a disappearing act.
Worth knowing. Don’t let a fish symbol make all the decisions for you. Use the returns alongside watercraft, lure choice, bait placement and the season. The sonar helps you find promising water; it doesn’t replace reading the venue.
On paper
Pros & cons
What we like
- Three CHIRP frequencies let you scan wide or zoom in on interesting water.
- Built-in GPS makes mapping depths and spots far more useful over repeated visits.
- Light enough to cast and retrieve without turning your session into hard graft.
- Strong headline depth range and very good target separation for a compact unit.
- Neoprene pouch and night-fishing cover are handy touches in the box.
Worth knowing
- You need a compatible phone or tablet nearby to view the sonar information.
- Casting and retrieving it can be a faff in snaggy margins, weed or tight swims.
- The useful GPS and mapping features will use battery faster than basic scanning.
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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 fish?
Can the Deeper CHIRP+ 2 find fish?
It can show sonar returns that may represent fish, weed, bottom changes and structure. Treat the display as information rather than a magic fish detector, and combine it with depth, feature and seasonal watercraft.
02How far can the Deeper CHIRP+ 2 connect?
How far can the Deeper CHIRP+ 2 connect?
Its Wi-Fi connection is stable up to 120 m in suitable conditions. Real-world range can vary with your phone, obstructions and where you’re standing on the bank.
03How long does the battery last?
How long does the battery last?
The rechargeable battery runs for up to 9 hours with GPS switched on, or up to 15 hours with GPS switched off. Cold weather, connection conditions and how you use it can affect that.
What anglers say
The word from the bank
Our read: verdict. The strongest reasons to choose it are three chirp frequencies let you scan wide or zoom in on interesting water. and built-in gps makes mapping depths and spots far more useful over repeated visits.; the main trade-off is you need a compatible phone or tablet nearby to view the sonar information..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Three CHIRP frequencies let you scan wide or zoom in on interesting water.”
Best fit
Checked Sept '26 — “Bank-based pike and perch anglers: You can search depth, weed and structure from the bank before committing to a swim or presentation.”
Worth knowing
Checked Sept '26 — “You need a compatible phone or tablet nearby to view the sonar information.”
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 Smart Sonar
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Owner reports
Own this? Help the next angler.
Quick multiple-choice reports from people who say they own the Deeper CHIRP+ 2 Smart Sonar. Not verified purchases, and kept separate from our score.
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