Features1Discomfort Relief: This leg massage machine provides gentle kneading and compression, which can effectively relieve leg fatigue and aches and pains. 23 Levels Heat Treatment: This leg massage machine provides 3 levels of heat treatment, you can choose the corresponding heat treatment level according to your needs. 3Easy To Use: This leg massage machine has an automatic shut off timer to ensure safe and optimal use, and one button control makes it easy to operate. 4Cordless Design: This leg massage machine has a rechargeable battery and the cordless design allows for free movement during use without wires getting in the way. 5Smart Timing Function: This leg massage machine has a 15 minute timer shut off function, you can reasonably control the massage time, suitable for leg edema, leg muscle soreness after exercise, shaping legs.SpecificationItem Type: Cordless Calf MassagerMaterial: ABSBattery Type: Lithium Ion BatteryBattery Capacity: 1800mAh ( Shipped With Built In Battery )Applicable Symptoms: Workplace Work: Due to sedentary and lacking of exercise, the blood in the legs are not fluent, which can easily cause varicose veins. Cold Legs And Feet: Older people have poor blood flow.Sore Legs: Sore legs after standing or walking for a long time.Exercise Recovery: Exercise without timely stretching, easy to cause muscle soreness, muscle thicknessProduct Function: Air Pressure Kneading, Vibration Pressure Relief, Constant Temperature Heat CompressionPackage List1 x Leg Massager 1 x USB Cable