Predator tools · Castable sonar · Our take
Deeper PRO+ 2 Smart Sonar
Deeper PRO+ 2 Smart Sonar
A tiny castable sonar that turns your phone into a proper water-reading tool. Handy for predators, boat work and sussing out new swims without dragging half the tackle room around.
- 90g castable sonar with an ABS enclosure and titanium inserts.
- Three beams: wide 100kHz, medium 240kHz and narrow 675kHz.
- Scans from 15cm down to 100m, with up to 15 scans per second.
- Wi-Fi range reaches up to 100m, with up to nine hours of operating time.
Make sure it’s the right one. This review covers the Deeper PRO+ 2 Smart Sonar, not the standard PRO or newer CHIRP models.
Tackle Index Score
Tackle Index score
A capable, compact sonar with genuinely useful beam options. It earns its keep when you explore new water, but casual anglers may find it more gadget than necessity.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9/10
- Performance9.2/10
- Impact on Fish Catching8.6/10
- Ease of Use8.4/10
- Value for Money8.5/10
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Who it suits
Is it right for you?
Great for
- Predator anglers exploring unfamiliar water. The different beams help you search broad areas, then examine likely depth changes and structure in more detail.
- Shore anglers who want extra watercraft. It gives you a portable way to build a picture of the bottom without needing a boat or bulky fish-finding setup.
Maybe skip if
- Anglers wanting a totally hands-off gadget. You still have to cast, retrieve, interpret the display and make the angling decisions yourself.
- People fishing extremely snaggy or weed-choked swims. A castable unit can be awkward where there’s a high risk of catching it up or losing a clean retrieve.
The lowdown
Introducing the Deeper PRO+ 2 Smart Sonar
A tiny castable sonar that turns your phone into a proper water-reading tool. Handy for predators, boat work and sussing out new swims without dragging half the tackle room around.
- 90g castable sonar with an ABS enclosure and titanium inserts.
- Three beams: wide 100kHz, medium 240kHz and narrow 675kHz.
- Scans from 15cm down to 100m, with up to 15 scans per second.
- Wi-Fi range reaches up to 100m, with up to nine hours of operating time.
Quick verdict
Verdict: a proper bit of kit for reading new water
The Deeper PRO+ 2 packs a lot into a tiny 90g body. Three sonar beams give you a useful mix of wide searching, mid-range detail and tight pinpointing, while the Wi-Fi link lets your phone show what’s happening below.
It won’t put a fish on the bank by itself, mind. You still need to understand features, depth changes and predator behaviour. But for locating drop-offs, weed, hard spots and likely ambush areas, it’s a cracking tool with far less faff than hauling a boat around.
A capable, compact sonar with genuinely useful beam options. It earns its keep when you explore new water, but casual anglers may find it more gadget than necessity.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9/10
- Performance
- 9.2/10
- Impact on Fish Catching
- 8.6/10
- Ease of Use
- 8.4/10
- Value for Money
- 8.5/10
The compact ABS body, titanium inserts and included neoprene pouch make it feel purpose-built for mobile fishing.
Three beams, fast scanning and a broad depth range give it plenty of flexibility for searching and feature-checking.
It can improve watercraft by revealing depth and structure, though your decisions and presentation still do the catching.
The cast-and-connect idea is simple, but getting genuinely useful at reading sonar takes a bit of practice.
It offers serious capability in a small package, with the best value coming to anglers who regularly fish unfamiliar or expansive water.
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 PRO+ 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 PRO+ 2 Smart Sonar
There’s a lot to be said for knowing what’s under the surface. You can stare at a feature all day, chuck a marker about and guess where the shelf drops away. Or you can use a clever little gadget like the Deeper PRO+ 2 and get a much clearer picture before the rods are properly in position.
This is a castable smart sonar. In plain English, it’s a small floating fish finder that talks to your phone over Wi-Fi. Cast it out, wind it back at a steady pace and the app shows the underwater picture as it develops. Depth, bottom shape and likely targets all become easier to make sense of.
At just 90g, it’s a doddle to carry. That matters when you’re roving for predators, moving between swims or already lugging a rucksack full of lures, deadbait gear and waterproofs. It’s not another chunky box taking up half the barrow. The ABS enclosure keeps things light, while titanium inserts add a bit of reassurance around the attachment points.
The clever bit is the three-beam sonar setup. The wide 100kHz beam has a 47-degree cone, so it’s the one to use when you want to search a decent patch of water. It gives you a broad look at depth changes and general features rather than making you obsess over one tiny spot straight away.
The 240kHz medium beam tightens things up with a 20-degree cone. That’s handy once you’ve found something interesting and want a cleaner look. Then there’s the 675kHz narrow beam, with its very tight 7-degree cone. Use that for a more precise read on a drop-off, hard patch or small feature you might want to fish close to.
That combination suits predator fishing rather nicely. Pike, perch and zander often relate to depth changes, weed edges, snags or a change in bottom. The sonar won’t identify a specimen fish wearing a little name tag, obviously, but it can help you find the sort of water where a predator has a reason to sit. That’s a much better starting point than chucking blind and hoping for a screaming take.
The stated scanning range runs from 15cm to 100m, and the unit can scan up to 15 times per second. It also offers target separation down to 1cm with the narrow beam, and 2.4cm with the medium and wide beams. Those figures sound technical, but the bank-side benefit is simple: you get a more useful picture when checking a feature rather than just a vague blob on a screen.
The Wi-Fi connection reaches up to 100m, which gives you plenty of room to work a swim without keeping the phone right beside the sonar. Just remember that range is a best-case figure. Trees, banks, bodies and general clutter can all affect wireless performance. Keep your phone secure in a pouch or case, and don’t get so glued to the screen that you miss a take.
Battery life is another strong point. Up to nine hours is enough for a serious day out, and charging is reasonably brisk: around 80% in 45 minutes, with full charge in about 75. That makes it easier to top up before heading out. The operating temperature range also covers proper cold-weather sessions, from -20°C to 40°C, so it isn’t just a fair-weather toy.
The real knack is using it as part of your watercraft rather than treating it like a magic fish-catching button. Search broad with the wide beam, slow down when something looks promising, then use the tighter beams to investigate. Check the bottom, consider the wind, watch for bait and think about how your target species might use that spot. Do that and the PRO+ 2 becomes a dead handy edge, especially on unfamiliar water.
Specifications
The nuts and bolts
- Weight
- 90g
- Sonar beams
- 100kHz wide, 240kHz medium, 675kHz narrow
- Beam angles
- 47° wide, 20° medium, 7° narrow
- Scanning depth
- 15cm to 100m
- Connectivity
- Wi-Fi, up to 100m
- Battery
- Rechargeable 3.7V 950mAh Li-ion; up to 9 hours
Specs checked with Deeper, Oct 2026.
Spot a model or spec change?
Our take
The big angle: proper watercraft without a boat
The PRO+ 2 is at its best when you’re faced with a new lake, reservoir or big river and need to make sense of it quickly. Cast it out, retrieve it steadily and watch the screen build a picture of depth, bottom changes and targets.
For predator anglers, that can mean finding the sort of depth and structure where pike, perch or zander might sit. It’s also useful for checking a swim before committing a lure or bait, especially when the margins look inviting but the main water could be hiding the real opportunity.
What you’re buying
A tiny sonar with three useful ways to search
The PRO+ 2 is a compact castable unit built around a three-beam sonar system. The wide beam covers more water quickly, the medium beam gives a more focused view, and the narrow beam helps you inspect a feature with greater precision. That lets you change approach instead of using one setting for every job.
The sonar connects to your phone over Wi-Fi, with a stated range of up to 100m. Its rechargeable battery is rated for up to nine hours, and charging is quick enough to make a pre-session top-up painless. The box includes the sonar, USB wire, neoprene pouch, two attachment bolts, quick guide and safety regulations.
Worth knowing. Keep your retrieve steady when mapping a swim. A slow, consistent movement gives the app a more useful picture. Start with the wide beam, then repeat the area with a tighter beam when you’ve found something worth investigating.
Best on the bank
A strong fit for searching predator water
Predator anglers are the obvious audience. If you’re looking for drop-offs, weed edges, hard spots or depth changes, the PRO+ 2 can help turn a blank-looking lake into a collection of sensible targets. It’s particularly handy when roaming and checking several swims rather than setting up for a long static session.
It can also suit coarse and carp anglers who like building a picture before fishing, although the value depends on your style. For a quick weekend chuck in a familiar swim, it may feel like extra faff. On a big venue or a new ticket water, finding the depth and bottom changes can make that effort properly worthwhile.
Worth knowing. Don’t let the display make every mark look exciting. Combine what you see with watercraft: wind direction, light, weed, bait activity, snags and the time of year. The best-looking sonar mark isn’t always the best fishing spot.
The practical stuff
Answers before you clip it on
Can it find fish? It can show sonar returns and help reveal what’s below, but it won’t replace judgement. A return might be a fish, weed, debris or part of the bottom picture. Use it to locate promising water, then fish the situation properly.
Is it difficult to use? The basic routine is straightforward: charge it, connect your phone, attach it securely, cast and retrieve. The learning curve comes from interpreting what the screen is showing. Spend time comparing the display with visible features and you’ll soon get a better feel for it.
Will it work in cold weather? Its stated operating range is -20°C to 40°C. As with any rechargeable device, sensible battery care still matters in cold conditions. Keep the phone and sonar protected between casts, and top everything up before a winter session.
On paper
Pros & cons
What we like
- Three beam options cover fast searching and more precise feature-finding.
- Properly compact and light, so it won’t turn casting into hard work.
- Long operating time and quick charging are handy for a full day on the bank.
- Wi-Fi connection reaches a serious distance in open conditions.
Worth knowing
- You’ll need a compatible phone and the Deeper app to get the full experience.
- Reading sonar takes a bit of practice; those icons won’t magically tell you where the PB is hiding.
- Casting and retrieving it adds another job to the session, especially in snaggy or weedy water.
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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.
01How deep can the Deeper PRO+ 2 scan?
How deep can the Deeper PRO+ 2 scan?
Its stated scanning range is from 15cm down to 100m. In real fishing terms, the useful detail you get will depend on water conditions, movement and how confidently you read the display.
02What are the three sonar beams for?
What are the three sonar beams for?
The wide 100kHz beam covers more water, the 240kHz medium beam gives a narrower view with more detail, and the 675kHz narrow beam focuses tightly on a small area. Use wide for searching, then narrow for checking a feature.
03How long does the battery last?
How long does the battery last?
The rechargeable 3.7V 950mAh battery is rated for up to nine hours. It reaches 80% charge in around 45 minutes and full charge in about 75 minutes.
What anglers say
The word from the bank
Our read: verdict: a proper bit of kit for reading new water. The strongest reasons to choose it are three beam options cover fast searching and more precise feature-finding. and properly compact and light, so it won’t turn casting into hard work.; the main trade-off is you’ll need a compatible phone and the deeper app to get the full experience..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Three beam options cover fast searching and more precise feature-finding.”
Best fit
Checked Sept '26 — “Predator anglers exploring unfamiliar water: The different beams help you search broad areas, then examine likely depth changes and structure in more detail.”
Worth knowing
Checked Sept '26 — “You’ll need a compatible phone and the Deeper app to get the full experience.”
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 PRO+ 2 Smart Sonar
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Owner reports
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