Product details: - Strong motor: delivers up to 4000 RPM for effective percussive massage - Easy to use: features a simple, one-button operation and ergonomic design - Lightweight: compact and easy to carry - Low noise: operates quietly with a noise level of less than 55dB - Extended battery capacity: provides up to 3 hours of use on a single charge - Speed: features four different speed settings, ranging from 2200 to 4000 RPM - Battery capacity: 800mAh rechargeable lithium-ion battery - Working time: up to 3 hours of use on a single charge - Noise level: low noise level of less than 55dB for quiet operation. Warranty: 1 year.