Product information:

Product Name: Smart Corrector
How it works: Bend over 25° to vibrate to remind
Battery Specifications: 400mAh/3.7V
Material: ABS + electronic components + high strength elastic nylon belt
Color box size: 12.5*10.7*4.2CM

Packing list:

Host*1
USB charging cable*1
Manual*1
Color box*1