1.USB power charge: 5V 1A
2.Li battery: 18650: 2500mA chargeing time: 3h, use time: 2.5h

3.Air massage stress reliever
4.3 Models of airbag working. Mode 1: Green light, 2. Model 2: Yellow light, 3. Model 3: Red light.
5.3 Intensity Levels with High: Green light /Middle: Yellow light /Low: Red light.
6.3 levels heat function: High: Green light /Middle: Yellow light /Low: Red light.
7.ADJUSTABLE LEG WRAPS SIZE - The calf circumference of the leg wraps can be up to 21 inches.
8.Automatically shut-off after 20 minutes,