Ekrin Athletics B37v2 review: The best value percussion gun we researched

For most athletes and regular gym-goers, yes. It earns a Kit Score of 8.2 and our best-value pick because it pairs a 56 lbs stall force (independent measurement) with up to 8 hours of rated battery, an ergonomic angled handle, and a lifetime warranty, all at a price well below the major brands. The main reasons to spend more are if you want the deepest possible stroke or an app-connected experience.

The Theragun Elite has a longer 16 mm amplitude stroke plus an app and guided routines, but it listed at roughly twice the price, and Therabody rates its force at 40 lb. The Elite is no longer sold new, and Therabody's refurbished stock shows sold out; the Theragun Prime (6th Gen) is the current comparison. The B37v2 gives up some stroke depth and the connected features, but holds speed well under pressure and delivers most of the practical performance for under half the price. For value, the Ekrin wins; for maximum depth and ecosystem, the Theragun does. The full Theragun vs Ekrin comparison covers both lineups model by model.

The B37v2 is the current revision of the same gun, not a separate product line. The core identity carried over: the angled ergonomic handle, five speeds, strong stall force, long battery life, and the lifetime warranty. Per Ekrin's listing, the v2 adds a new silicone ball attachment and USB-C PD charging rather than changing what the gun is. If you see the original B37 discounted, it remains a capable gun, but at similar prices the v2 is the one to buy.

The B37S was a higher-powered variant of the B37, but Ekrin's own store no longer lists it: the current lineup is the Kestrel, the B37, and the smaller Bantam. If you find a B37S from a third-party seller, confirm the warranty terms before buying, since Ekrin's lifetime coverage requires registration within 30 days for purchases outside its own site.

The 365 is no longer a regular product in Ekrin's store; it appears only occasionally as an open-box unit, which Ekrin covers for one year rather than for life. For a smaller Ekrin, the current option is the Bantam. The B37 remains the pick for athletes and anyone working dense muscle groups, because independent testing shows it holds speed under real pressure.

Be careful here, because the lifetime warranty is a large part of what you are paying for. Ekrin's lifetime warranty is nontransferable and applies to the original purchaser; if you buy outside Ekrin's own site you must register the device within 30 days. A secondhand unit from a marketplace typically carries no coverage at all, and Ekrin's own open-box units get a one-year warranty instead of lifetime. Given that a new B37v2 already undercuts the premium brands, the discount on a used unit rarely justifies giving up the warranty on a motor-driven device you will run for years.

Independent testing measured 49 to 61 dB depending on speed (Ekrin lists 35 to 55 dB), which is quiet enough for use while watching TV or in a shared room at lower speeds, and noticeably restrained at full power for a gun with this much stall force. The brushless motor is a big reason the noise stays controlled even under load.

It includes four heads: a silicone ball for large muscle groups, a bullet for pinpoint trigger points, a flat for general use, and a fork for areas like the spine and Achilles. That is fewer than some budget guns bundle, but the four cover the situations most people actually use.

Yes. Ekrin rates it for up to 8 hours, which is among the longest in the category and well past the roughly two hours some premium guns manage; independent testing found somewhat less in practice, so plan on 5 to 6 hours of real use. It charges over USB-C PD, so most people go days or weeks between charges depending on how often they use it.