1. Host size: 55mm in diameter and 12mm in thickness
2. Strap size: 100cm
3. Weight: about 550g
4. Lithium battery capacity: 100mAh
5. 6 modes, 9 levels, 360 degree full package
6. It has the functions of abdomen and waist support, correct sitting posture, and keep the waist warm
7. EMS bionic micro-electric technology, born for the realization of efficient exercise
8. Hook and loop fastener design, the tightness can be adjusted by yourself
9. Not limited to venue and time, easy to carry, you can practice if you want