Features:
1:6- roller massage mechanism
2:Kneading width is about 3.8cm to 24.5cm
3:The massage stoke from up to down is about 64cm
4:Several massage modes, such as kneading,tapping, knocking and synchronization
5:4 auto massage modes
6:3-grade massage speed is adjustable
7:3-grade massage width is adjustable
8:The default massage time is 20 minutes