1.USB power charge: 5V 1A
2.Li battery: 500mA, chargeing time: 2h, use time: 90mins

3.AIR MASSAGE STRESS RELIEVER
4.SELECTABLE MODES AND COMPRESSION INTENSITY - The controller has 3 Intensity Levels , Blue lights: middle level without heat. Green lights: low level without heat, red lights: high level with heat (35-40 degree)
5.ADJUSTABLE LEG WRAPS SIZE - The calf circumference of the leg wraps can be up to 21 inches.
6.Heat Wamer for your body
7.Automatically shut-off after 15 minutes,