Description: Battery model: 18650 lithium battery Battery capacity: 2000ma Charging time 1.5-2.5 hours Life time: 90 minutes Charging method: usb charging Input voltage: 110-240V Specifications: Lightweight and easy to carry Strong power, quiet and low noise Long battery life, sweatproof shell High frequency vibration relaxes myofascial muscles and relieves muscle fatigue Can quickly relieve muscle stiffness and soreness after exercise 30dB Low noise operation Intelligently adjust the output power of the motor, only need to charge for 2.5h for a long-lasting massage Built-in press feedback system, more pressure to adjust the motor output power Package Included: fascia massager*1