Feature:1. Heate Vibration: Electric knee massager with vibration massage and carbon fiber hot compress to help relieve pressure and fatigue on your knees, making your knees relaxed.2. Adjust Temperature: Automatic massage and temperature adjustment function, ensure that your massage quality and experience is more optimized, the best to relieve knee fatigue and stress.3. Easy Operation: Clear and easy to operate LED screen and touch button, let you easily adjust the function and temperature of the knee massager, enjoy convenient use experience.4. Full Wrapping: Vibration knee massager adopted ergonomic design, fully wrapped to fit the knee joint, ensure that your knee can be fully relaxed, provide a comfortable massage effect.5. USB Rechargeable: Cordless knee massager adopted 3000mAh battery and USB charging for long battery life, make it more convenient for you to use it without frequent battery replacement.Specification:Item Type: Infrared Heat Knee MassagerMaterial: ABSBattery Type: Lithium BatteryBattery Capacity: 3000mAh (Included)Input Voltage/Current: DC 5.0V /2.0aRated Power: 10wCharging Time: 3-4 hoursFull Charge Use Time: 2-3 hours.Package List:1 xKnee Massager1 x USB Charging Cord