Product information:

Product description: USB charging chest strap
Flashing mode: fast flashing/slow flashing/long on/off
Battery model: 180mAh rechargeable lithium-ion battery
Material: mesh fabric + plastic buckle + ABS battery box + D buckle
Color: red, blue, green

Size information:

Size: S/M/L

Packing list:

USB charging chest strap*1