Features:
1. Silicone strap suitable for 22-31.8mm/0.87-1.25in handlebars
2. Both buttons can control the horn
3. Built-in 280mAh lithium battery
4. Fully charged in 1.2 hours

Specification:
Material: ABS + PC
Color: Black
Size: 66x49x26mm/2.6x1.93x1.02in
Net weight: 40g
Decibel: 120dB
Battery capacity: 280mAh
 
Whats in the box?
1 X Bicycle Horn
1 X Chinese and English Manual
1 X Silicone Strap 
1 X USB Charging Cable