1.USB power charge: 5V 2A
2.Li battery: 21700: 4000mA, chargeing time: 5h,using time: 4 hours

3.Memory working method. when next time open machine can memory last time working models. comsumer no need to adjust to the models they like.
4.Air massage stress reliever
5.5 Models of airbag working.
6.5 levels of intensity
7.3 levels heat can be selection
8.3 vibration modles can be selection
9.Adjustable leg wraps size - The calf circumference of the leg wraps can be up to 21 inches.
10.Automatically shut-off after 20 minutes
11.Can be used while you are charging
12.It has a high-voltage protection function when charging
13.Knee air bag, release the plain
14.Thigh and calf Squeezing, Scrapping Treatment