30 different levels of RPM (1440 - 3200) to chose from for deep muscle massage. FYLINA massage guns are equipped with a new generation brushless motors bringing powerful massage power providing best vibration strength in highest level; FYLINA massage gun is Different from the ordinary 6mm amplitude massage gun on the market, our deep tissue massage gun has an amplitude of 16mm, allowing the percussion to penetrate deep into the deep tissue to release of lactic acid better; FYLINA massage gun equiped with a intelligent timing protection, Continuous use for more than 15 minutes will automatically shut down Prevent overheating and to avoid working all the time when you leave for a while without turn off; Torchscreen control, easier to the speed level ; The advanced Heat dissipation to provent motor from overheating. Sot it has a longer service time; Large Battery capacity, no need to charge it everyday.