1、Stiffness and Soreness Relief: The massager is used to relieve muscle stiffness and soreness, promote blood and lymph circulation, accelerate recovery after exercise and sports injuries, improve overall health of the body's soft tissues, and prevent inflammation caused by adhesion between the fascia and muscles. 2、Four Different Massage Heads: The massager is equipped with four different shapes of massage heads to help users relax different body parts. 3、High-quality Motor: The massager adopts high-quality motor and has super heat-dissipating function. The high-precision mold makes the machine head and the body tightly connected. The smooth sliding can effectively reduce the noise during operation. 45DB silent massage. 4、Quick Charging: The massager is equipped with a 2400mAh high-quality lithium battery, which can work for about 5 to 6 hours after each charge, and can be quickly charged. 5、HD LCD Display: HD LCD display. Touch buttons. Accurate display of gear position, power and switch. 20-speed vibration adjustment. Efficient massage for muscles relaxation. Specifications: Size: about 24*24.5*51mm/9.45*9.64*2.01in Application: running, fitness equipment, sports trends, fitness and body, health massage Amplitude: about 12mm/0.47in Gear position: 1-20 files Speed: 1200-3300r/min Charging voltage: 110-240V Battery: rechargeable lithium battery 24V 2400mAh Use time: 5-6 hours Charging time: 2 hours Display: LCD digital display