Deeper Chirp+ 2.0 Castable Sonar review
By Tom Calder
Key specs
The maker's figures.
- Type
- Castable GPS sonar
- Key detail
- 3 CHIRP frequencies, casts ~120m, maps depth/features to your phone
Cast it out, and gravel bars, drop-offs and weed lines draw themselves on your phone — Deeper invented the castable-sonar category and this is its current mainstream flagship. For finding features on a big or unfamiliar water it genuinely changes how you fish. Honesty about who it's for: it's a nice-to-have for anglers already catching, not something a beginner needs before their first fish, it needs your phone bankside, and its ~15-hour battery wants a power bank on multi-day sessions.
- Best for
- Feature-finding instead of fishing blind — the castable sonar that created the category.
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Researched, not used. We haven't used this product. This review is built from the maker's specifications, owner reports and our own sizing.
What we like
- Turns unknown water into a mapped swim in twenty minutes
- GPS bathymetric mapping saves your findings per venue
- 15-hour battery covers a full day's exploring
Worth knowing
- A luxury for improvers, not a beginner's first purchase
- Needs a charged phone alongside it — two batteries to manage
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This is a Researched review: we haven't used this product. We check every specification against at least two independent sources, re-check the UK price on a schedule where we can track it automatically, and say plainly who it isn't for. Commissions never change a rating.
If this isn’t the one
Best for The first thing to buy — knowledge before kit, and this is the classic.
in stock when checkedas of 4 Nov 2026, 19:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for The reel upgrade — the name UK anglers mean when they say 'baitrunner'.
as of 4 Nov 2026, 19:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.
Best for The step up from a starter combo — a matched two-rod carp outfit in one box.
as of 4 Nov 2026, 19:07 GMT · Details
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.co.uk at the time of purchase will apply to the purchase of this product.Free alerts for your home
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