Ekrin Athletics B37 Percussion Massager vs Oral-B iO Series 9

The B37 is Ekrin Athletics' benchmark percussion massager and its most popular model, aimed at athletes who want professional-level percussive therapy rather than a novelty device. It pairs a powerful brushless motor with five speed settings chosen to cover the useful range rather than padding a spec sheet, and the amplitude is matched to the power so it actually reaches muscle rather than vibrating the surface. Two practical details separate it from cheaper massage guns: ultra-quiet operation, which makes it usable in a shared space or while watching television, and an eight-hour battery life, so it is not constantly on charge. The angled ergonomic handle reduces wrist strain when reaching your own back and shoulders. Ekrin backs it with a lifetime warranty and sells it alongside the compact Bantam and the higher-end Kestrel.

The Oral-B iO Series 9 pairs a magnetic, micro-vibrating brush head with linear magnetic drive technology for a smoother, gentler brushing motion compared to traditional oscillating-rotating brushes, while still delivering thorough plaque removal. A color-coded smart pressure sensor lights up green, yellow, or red on the handle to indicate ideal, acceptable, or excessive brushing pressure, helping prevent gum damage from brushing too hard. The companion app uses the phone camera during brushing to provide an AI-powered 3D mouth map showing which areas were missed or need more attention, turning brushing into a more guided, data-driven routine.

• Genuinely quiet compared with most percussion guns
• Eight-hour battery removes charging as a friction point
• Angled handle makes self-treatment far easier
• Lifetime warranty is exceptional in this category

• Genuinely useful real-time pressure feedback
• Smooth, comfortable brushing motion
• Detailed AI-guided app coaching
• Premium build quality

• Larger and heavier than compact travel massage guns
• Five speeds is fewer than some competitors advertise
• Premium pricing versus generic massage guns

• High price versus standard electric toothbrushes
• Replacement brush heads add ongoing cost
• App features require a smartphone