Quick Answer: The Ekrin B37 is Ekrin Athletics’ best-selling massage gun for 2026, priced at $229.99 with a 56 lb stall force, a 12mm amplitude, 5 speeds from 1,400-3,200 RPM, and a 5-6 hour Samsung-cell battery in a ~1.6 lb body. It costs roughly $100 less than a Theragun Prime while more than doubling its stall force, and it carries a lifetime warranty for registered customers — coverage neither Theragun nor Hyperice offer at any price. Massage Gun Advice’s independent testing confirms the motor holds its speed under load, which is exactly where most $200-class guns give up.
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The B37 is the gun that built Ekrin Athletics’ reputation, and three-plus years after launch it remains the sweet spot of the brand’s five-gun lineup. It doesn’t chase the deepest stroke on the market or bundle an app — it wins on stall force per dollar and a warranty that outlasts the hardware most rivals expect to fail by year three. Here’s the honest breakdown of what it gets right, where it falls short, and who should buy it.
Ekrin B37 at a glance
| Spec | Ekrin B37 |
|---|---|
| Amplitude | 12mm |
| Stall force | 56 lb |
| Speeds | 5 (1,400-3,200 RPM) |
| Battery | 5-6 hrs (Samsung cell) |
| Weight | ~1.6 lb |
| Warranty | Lifetime (registered customers) |
| Handle | 15-degree angled |
| Price | $229.99 |
| Best for | Most buyers — value + stall force + warranty |
What the Ekrin B37 gets right
More stall force than nearly anything in its price class. At 56 lb, per Massage Gun Advice’s testing, the B37’s motor doesn’t noticeably slow when you press into a dense quad or glute — exactly where most $200-class guns stall out. That’s more than double the Theragun Prime’s roughly 30 lb, at $100 less.
A lifetime warranty that outlasts the hardware. Register within 30 days of purchase and the B37 is covered for life, plus a 30-day money-back guarantee. Theragun and Hyperice both cap coverage at one year — since motors and batteries are the two components most likely to fail by year two or three, Ekrin’s warranty is worth real money over time. Recovatech’s three-year follow-up on the same unit reported it still holding up, which makes the promise credible.
A wrist-friendly angled handle. The 15-degree angle cuts strain versus straight T-shaped handles, especially reaching your own back or shoulders — Treadmill Review Guru and Massage Gun Advice both single this out.
A genuinely long battery. 5-6 hours per charge from a Samsung lithium cell, enough for a week or more of daily sessions between charges.
Where the Ekrin B37 falls short
No Bluetooth, app, or screen. Unlike Theragun’s ecosystem, the B37 is manual-only — five speeds, no guided routines. For most buyers that’s not a loss, but if app-guided programs matter to you, look at Theragun instead.
A 12mm stroke, not the deepest on the market. The Theragun Pro Gen 5’s 16mm amplitude still digs deeper for devotees who prioritize maximum stroke length above stall force or price. Ekrin’s own Kestrel closes some of that gap at 13mm for $120 more.
Heavier than the minis. At ~1.6 lb it’s not built for one-handed reach-arounds the way the Ekrin Bantam (1.1 lb) is — the B37 is a two-hand, full-size gun.
Ekrin B37 vs the alternatives
| Massage gun | Best for | Amplitude | Stall force | Warranty | Price |
|---|---|---|---|---|---|
| Ekrin B37 | Best value + warranty | 12mm | 56 lb | Lifetime | $229.99 |
| Theragun Prime (6th Gen) | Brand ecosystem + app | 12mm | ~30 lb | 1 year | $329.99 |
| Bob and Brad C2 | Cheapest capable full-size | ~10mm | ~45 lb | 2 years | ~$100 |
| Ekrin Kestrel | Deepest stroke in the Ekrin line | 13mm | 55+ lb | Lifetime | $349.99 |
- B37 vs Theragun Prime: the Prime costs $100 more, matches the B37’s 12mm amplitude, but Therabody doesn’t publish a stall-force figure while the B37’s 56 lb is independently tested — and Ekrin’s lifetime warranty beats Theragun’s 1-year coverage.
- B37 vs Bob and Brad C2: the C2 costs less than half as much but trails on stall force and lacks the lifetime warranty (2 years vs Ekrin’s lifetime) — a real budget-vs-value trade-off, not a clear win either way.
- B37 vs Ekrin Kestrel: the Kestrel adds 1mm of amplitude and a sixth speed for $120 more — most buyers won’t need it over the B37.
See the full Ekrin lineup for the B37S, Kestrel, Bantam, and 365, or the complete field in our best massage gun ranking.
Who should buy the Ekrin B37?
Buy it if: you want the strongest stall-force-per-dollar in the mid-range tier, a warranty that outlasts the battery, and don’t need app-guided routines.
Skip it if: you specifically want the deepest possible stroke (look at the Theragun Pro or Ekrin Kestrel) or app integration matters more to you than raw hardware value (look at Theragun Prime).
Ekrin B37 by the numbers
| Spec | Figure | Source |
|---|---|---|
| Stall force | 56 lb | Ekrin published specs; Massage Gun Advice testing, 2026 |
| Amplitude / speeds | 12mm, 1,400-3,200 RPM | Ekrin published specs, 2026 |
| Battery | 5-6 hrs (Samsung cell) | Massage Gun Advice; Recovatech 3-year update |
| Price vs Theragun Prime | $229.99 vs $329.99 | Ekrin / Therabody list pricing, 2026 |
The bottom line
The Ekrin B37 remains the gun to beat in the $200-250 tier — 56 lb of stall force, a 12mm amplitude, and a 5-6 hour battery for $229.99, backed by a lifetime warranty that no Theragun or Hyperice gun matches at any price. It gives up an app ecosystem and a couple millimeters of stroke to the top-end Theragun Pro, but for most buyers it delivers near-premium performance without the premium price. See the rest of Ekrin’s current lineup in our Ekrin massage gun review, or compare the full field in our best massage gun guide.