Deeper Chirp+ 2.0 Castable Sonar review
Feature-finding instead of fishing blind — the castable sonar that created the category.
By Tom Calder · Price last checked 20 Sep 2026, 12:29 BST · price-tracked
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.
as of 20 Sep 2026, 12:29 BST · Details
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- 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
- A luxury for improvers, not a beginner's first purchase
- Needs a charged phone alongside it — two batteries to manage
Key specs
| Type | Castable GPS sonar |
| Key detail | 3 CHIRP frequencies, casts ~120m, maps depth/features to your phone |
Our rating is a considered spec-and-evidence verdict: we verify 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 a product isn't for. Commissions never change a rating. Read the full methodology →
Alternatives to consider
as of 20 Sep 2026, 12:29 BST · 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.as of 20 Sep 2026, 12:29 BST · 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.Want this cheaper?
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