Features: Adjustable speed levels: 1200-3500RPM, you can adjust the massage's rotating speed to meet reach the most comfortable state. Replaceable massage heads: equipped with four different shaped massage heads to help the user to relax different body parts. 2 - 5hours working time: 2600mAh high-quality lithium battery, enable to keep working about 2 to 5 hours after per charge. Functions: Relieve muscle stiffness and soreness, improve the overall health of the body's soft tissues. Prevent fasciitis: which is a kind of painful and difficult to heal inflammation caused by adhesion between the fascia and muscles. Adopts high-quality motor: has ultra-strong heat dissipation function, no crash, can run for a long time and would not stop working . LED battery indicator: free your trouble of worrying about power outages. Ergonomic designed grip: minimizes external vibrations and the durable anti-slip silicone grip makes the massager easier and comfortable to hold. Specification:Condition: 100% Brand NewMaximum load current: 11AMaximum torque: 70N/mBattery life: 2~5 hoursGear intensity: 1200~3500 4 gear adjustmentInterface type: DCInput voltage is 110-240vPlug: US Power supply mode: rechargeable lithium batteryMassage heads: 4Size: Approx. 25 * 23cm / 9.8 * 9.1inWeight: 1550 g / 54.7 oz(approx.)Package List:1 * Massager1 * Adapter4 * Massage Head1 * Manual