Fish finders · Sonar tools · Our take
Deeper PRO+ 2 Sonar
Deeper PRO+ 2 Sonar
Want a clearer picture of depth, weed and fishy-looking bits without lobbing a boat all over the lake? The Deeper PRO+ 2 puts a capable sonar on the end of your rod and feeds the picture straight to your phone.
- Three sonar frequencies: 100 kHz wide, 240 kHz medium and 675 kHz narrow beams.
- Depth range from 15 cm to 100 m, with up to 15 scans per second.
- Wi-Fi connection rated as stable up to 100 m, with GPS and multiple positioning systems.
- 90 g body with up to nine hours of operating time from its rechargeable battery.
Make sure it’s the right one. This review covers the Deeper PRO+ 2 Sonar, the 90 g castable sonar with three beam frequencies, GPS positioning and Wi-Fi connection to a smartphone or tablet.
Tackle Index Score
Tackle Index score
A capable, flexible sonar tool for anglers who want more information before choosing where to fish.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality9.1/10
- Performance9.4/10
- Impact on Fish Catching8.8/10
- Ease of Use8.6/10
- Value for Money8.5/10
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Who it suits
Is it right for you?
Great for
- Carp anglers exploring unfamiliar pits and reservoirs. The three beam widths and positioning systems help you find depth changes, bars and likely areas before settling on a swim.
- Coarse anglers who like to build a picture of their venue. Fast scanning, useful target separation and repeatable positioning make it handy for comparing areas across different visits.
Maybe skip if
- Anglers who fish small, familiar commercials. If you already know the swim and mainly fish short margins, the extra information may not justify the added cost and faff.
- Anyone who dislikes phone-based tackle. The sonar relies on a Wi-Fi connection to a phone or tablet, so it isn’t a completely standalone gadget.
The lowdown
Introducing the Deeper PRO+ 2 Sonar
Want a clearer picture of depth, weed and fishy-looking bits without lobbing a boat all over the lake? The Deeper PRO+ 2 puts a capable sonar on the end of your rod and feeds the picture straight to your phone.
- Three sonar frequencies: 100 kHz wide, 240 kHz medium and 675 kHz narrow beams.
- Depth range from 15 cm to 100 m, with up to 15 scans per second.
- Wi-Fi connection rated as stable up to 100 m, with GPS and multiple positioning systems.
- 90 g body with up to nine hours of operating time from its rechargeable battery.
Quick verdict
The verdict
The Deeper PRO+ 2 Sonar is a cracking bit of kit for mapping out unfamiliar water, checking depths and getting a better idea of what’s happening beneath the surface. Its three sonar beams give you useful flexibility, from a broad sweep to a tighter look at a feature.
It won’t replace watercraft, plummet work or actually fishing a spot. But for the angler who likes to arrive with a plan, find the drop-offs and understand a swim before committing the rods, it’s a seriously handy tool.
A capable, flexible sonar tool for anglers who want more information before choosing where to fish.
Desk-research score from specs, price and fishing fit · How we score
- Product Quality
- 9.1/10
- Performance
- 9.4/10
- Impact on Fish Catching
- 8.8/10
- Ease of Use
- 8.6/10
- Value for Money
- 8.5/10
The ABS enclosure, titanium inserts, supplied pouch and useful positioning hardware make this a well-equipped package.
Three beam options, fast scanning, broad depth coverage and strong rated Wi-Fi range give it plenty of capability.
It can help you find and understand promising areas, though it supports watercraft rather than replacing it.
The castable design is straightforward, but pairing it with a phone and interpreting sonar returns takes a little practice.
There’s a lot packed in, but it makes most sense for anglers who regularly fish unfamiliar or larger waters.
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 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 Sonar
There’s nothing quite like turning up at a new lake, looking across a flat-calm surface and wondering where on earth the fish are having it. The Deeper PRO+ 2 Sonar is built for that exact head-scratching moment. Cast it out, connect it to your phone and you can start building a picture of what’s underneath.
This isn’t a tiny toy depth finder with one vague number on the screen. The PRO+ 2 uses three sonar frequencies, giving you a broad beam for searching and tighter beams for checking a specific area. That’s a proper advantage when you’re trying to find a bar, a shelf, a hole or a clean patch without spending half the day plumbing around.
The 100 kHz wide beam covers a 47-degree angle, so it’s the one to reach for when you want to scan more water. The 240 kHz medium beam narrows that to 20 degrees, while the 675 kHz narrow beam gives a focused 7-degree view. Broad sweep first, detailed look second. Nice and straightforward.
For carp and coarse fishing, that flexibility makes plenty of sense. You might start by searching a new swim, then switch to the narrow beam once something catches your eye. It’s a bit like going from wandering around with a map to zooming in on the exact footpath. No magic, no bosh — just more information before you commit the rods.
The depth range is 15 cm to 100 m, which is comfortably more than most UK coarse anglers will ever need. More relevant on the bank is the scanning speed, which reaches up to 15 scans per second. That should give you a useful moving picture as the sonar travels across the swim, rather than leaving you waiting ages for each update.
Target separation is rated at 1 cm with the narrow beam and 2.4 cm with the medium and wide beams. That helps when you’re looking at close-together features and trying to make sense of a more detailed return. Remember, though, the screen still needs interpreting. A clever gadget won’t turn every blob into a definite lump.
The PRO+ 2 connects over Wi-Fi, with a stable connection rated up to 100 m. That’s handy because your phone can stay on the bank while the sonar does its work out in front of you. Keep the phone dry, keep your battery topped up and you’ll avoid the usual mid-session faff.
There’s proper positioning support here too, with GPS, GLONASS, Galileo, BeiDou and QZSS systems listed. For anyone who likes keeping track of productive areas, that’s a bob-on feature. You can use the information to make future visits more organised instead of relying on, “I’m sure the spot was somewhere over there.”
At 90 g, it’s light enough to be practical without becoming a massive lump on your line. Still, don’t treat it like a lead clip. Use suitable tackle, attach it properly and cast smoothly. A steady retrieve also makes more sense than dragging it back like you’re racing a pike lure.
Battery life is up to nine hours, and the rechargeable 3.7 V, 950 mAh lithium-ion battery can reach 80% charge in 45 minutes and full charge in 75 minutes. That’s plenty for a day’s reconnaissance or a normal session. The ABS enclosure with titanium inserts, neoprene pouch and supplied attachment bolts round off a package that feels aimed at anglers who want useful information without dragging a boat onto the water.
Specifications
The nuts and bolts
- Material
- ABS enclosure with titanium inserts
- Weight
- 90 g (3.2 oz)
- Sonar
- Three frequencies: 100 kHz wide, 240 kHz medium and 675 kHz narrow
- Depth range
- 15 cm to 100 m (6 in to 330 ft)
- Connection and battery
- Wi-Fi up to 100 m; rechargeable 3.7 V, 950 mAh Li-ion battery; up to 9 hours
- In the box
- PRO+ 2 Sonar, USB wire, neoprene pouch, two attachment bolts, quick guide and safety regulations
Specs checked with Deeper, Oct 2026.
Spot a model or spec change?
Our take
Why this one matters on the bank
The PRO+ 2 sits in that useful middle ground between a basic depth finder and a full boat-mounted fish finder. You can cast it out, retrieve it steadily or use it from a boat, then view the return over Wi-Fi on your phone. That makes it especially appealing when you’re fishing a new venue, a big gravel pit or a river stretch where the contours aren’t obvious.
The three beam options are the clever bit. The 100 kHz wide beam covers more water, the 240 kHz medium beam narrows things down, and the 675 kHz narrow beam gives the most focused look. In plain English, you can search broadly first, then home in on a likely spot without endlessly chucking a lead around. Proper useful when the fish are showing nowhere near the margins and you’re trying to make sense of a big expanse.
There’s also built-in positioning through GPS, GLONASS, Galileo, BeiDou and QZSS. That gives the unit the tools to help record and revisit locations, which is bang on for building a picture of a venue over several visits. Find a bar, crease or depth change on one session, and you’ve got a better chance of putting the rig back in the same sort of area next time.
For coarse and carp anglers, the biggest gain is information. You can check whether that inviting-looking patch is actually deeper, see where a shelf runs away from the bank, and look for changes that might influence how you fish. It won’t tell you where a carp will feed at 2am, mind. Fish move, conditions change and no gadget replaces watching the water. Think of it as another clue, not a magic wand.
The unit weighs just 90 g, so it’s light enough to cast with suitable tackle without turning the whole job into a comedy act. You’ll still want sensible gear and a smooth casting stroke. Keep an eye on your knots, use the supplied attachment hardware correctly, and don’t go launching it with a flimsy setup just because the sonar itself is small.
Battery life is up to nine hours, with charging listed at 80% in 45 minutes and full charge in 75 minutes. That’s more than enough for plenty of day sessions, though a proper overnight angler should still start with it topped up. The rechargeable 3.7 V, 950 mAh lithium-ion battery keeps the package neat and avoids faffing around with disposable cells.
The Wi-Fi connection is rated as stable up to 100 m, giving you useful freedom to keep the phone on the bank while the sonar is out in the swim. In practice, keep the handset somewhere sensible and dry. A waterproof pouch or case is a dead handy addition, because a phone full of lake water is a proper mood killer.
Depth coverage runs from 15 cm down to 100 m, although most coarse anglers will be using the more relevant part of that range on canals, commercials, reservoirs and pits. The narrow beam can separate targets as close as 1 cm, while the medium and wide beams are rated at 2.4 cm. That level of detail can help when you’re trying to understand a feature rather than simply asking, “Is it deep here?”
So, who should buy it? Anglers who enjoy learning a water, those fishing large or unfamiliar venues, and anyone who wants a repeatable way to check spots will get the most from it. If you mainly fish a tiny commercial, already know every inch of your swim or hate using phones on the bank, the spend may feel a bit daft. For the right angler, though, this is a polished and properly versatile sonar tool that can cut through a fair bit of guesswork.
What you’re buying
A castable sonar with room to search and zoom in
The PRO+ 2 gives you three ways to read the water. Its 100 kHz wide beam covers 47 degrees, the 240 kHz medium beam covers 20 degrees, and the 675 kHz narrow beam covers 7 degrees. Use the wide beam to hunt around, then tighten things up when a feature looks worth a closer poke.
The unit scans at up to 15 times per second and offers target separation down to 1 cm with the narrow beam. That’s useful for teasing out small changes, especially when you’re trying to work out whether a promising area is a clean spot, a crease or just a bit of wishful thinking.
Connection is over Wi-Fi, with a rated range of up to 100 m. The rechargeable battery runs for up to nine hours, while GPS, GLONASS, Galileo, BeiDou and QZSS positioning support gives you useful tools for revisiting areas later.
Worth knowing. The sonar is only as useful as the way you use it. Search methodically, compare readings and keep an eye on the water. Don’t see one interesting return and instantly move every rod — give the information a bit of context.
Where it earns its keep
Best for anglers who want a plan before the bite-time
This is aimed squarely at anglers who enjoy understanding a venue. It suits carp anglers on big pits, coarse anglers exploring reservoirs and anyone fishing a new stretch where the contours aren’t obvious. A few casts can help you decide whether a swim is worth serious attention.
It’s also useful for building a repeatable approach. If you find a depth change or feature that looks right, the positioning systems can help you log where you were. That’s far better than trying to line up a tree, a bush and a random cloud at dusk.
It’s less compelling on a tiny commercial you’ve fished for years. There, you may already know the margins, shelves and usual patrol routes. It also won’t suit anyone who wants completely standalone tackle, because the viewing experience depends on a phone or tablet and a Wi-Fi connection.
The questions anglers actually ask
A few straight answers before you chuck it out
Can it find fish? It can show sonar returns that may help you understand what’s below, but don’t treat every mark as a definite carp. Weed, debris and bottom features can all affect what you see. Use it alongside fish movement, weather, water clarity and good old-fashioned watercraft.
How should you fish it? Start wide when mapping a new area. Retrieve it steadily and compare depths as you move across the swim. Once you find a likely feature, swap to the medium or narrow beam for a more focused look. Then check the spot with your normal plumbing or lead work before clipping up.
Will it last a full session? The stated operating time is up to nine hours. That should cover a normal day on the bank, provided the battery starts charged and your phone isn’t already gasping. For long nights or back-to-back sessions, a power bank is a sensible bit of insurance.
On paper
Pros & cons
What we like
- Three beam choices let you scan broadly, then focus on a feature.
- Useful depth range and fast scanning for mapping swims and finding changes.
- Built-in GPS, GLONASS, Galileo, BeiDou and QZSS positioning support.
- Lightweight 90 g design with up to nine hours of battery life.
- Supplied with a neoprene pouch, attachment bolts and USB wire.
Worth knowing
- You’ll need a compatible phone or tablet and enough battery for the session.
- It adds another device to manage, charge and protect on the bank.
- A sonar image is only part of the puzzle; it can’t replace watercraft or careful observation.
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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 you use the Deeper PRO+ 2 from the bank?
Can you use the Deeper PRO+ 2 from the bank?
Yes. It’s designed as a castable sonar, so you can send it out with suitable tackle and view the information over Wi-Fi on your phone or tablet. Use a sensible setup and make sure the attachment is secure before casting.
02Which beam should you use?
Which beam should you use?
Start with the 100 kHz wide beam when you’re searching a larger area. Move to the 240 kHz medium beam for a more balanced view, then use the 675 kHz narrow beam when you want to inspect a specific feature more closely.
03Is it useful for carp and coarse fishing?
Is it useful for carp and coarse fishing?
Yes, particularly on unfamiliar or larger waters. It can help reveal depth changes, shelves and other underwater features. Treat the picture as guidance rather than a guaranteed fish-catching shortcut, because watercraft and changing conditions still matter.
What anglers say
The word from the bank
Our read: the verdict. The strongest reasons to choose it are three beam choices let you scan broadly, then focus on a feature. and useful depth range and fast scanning for mapping swims and finding changes.; the main trade-off is you’ll need a compatible phone or tablet and enough battery for the session..
Our take on the feedback
Why it appeals
Checked Sept '26 — “Three beam choices let you scan broadly, then focus on a feature.”
Best fit
Checked Sept '26 — “Carp anglers exploring unfamiliar pits and reservoirs: The three beam widths and positioning systems help you find depth changes, bars and likely areas before settling on a swim.”
Worth knowing
Checked Sept '26 — “You’ll need a compatible phone or tablet and enough battery for the session.”
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 Sonar
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Owner reports
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Quick multiple-choice reports from people who say they own the Deeper PRO+ 2 Sonar. Not verified purchases, and kept separate from our score.
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