Product Information：
Smart induction: S adjusts the angle of the back, vibrates when the back is bent 25 degrees to sound an alarm, and trains users to develop good posture habits instead of forcing users to straighten their backs.
Material: high-strength nylon belt, imported ABS
Charging interface: USB universal interface
Battery capacity: 500mAh
Applicable people: children/adults unisex
Features:
1. Correct posture
2. Reshape the spine
3. Protect eyesight
