Specifications:
Waterproof: Attach permanently to your bike without worrying about having to remove it in bad weather
Material: Sturdy black plastic - no metal parts to rust
Fit for: Bicycle
Power supply: 1* 6F22 9V battery (No include)
Dimensions: 100*60*35mm
Color: Black
Weight: 56g
Package dimension: 110*55*75mm
Package weight: 120g

Package include:
1* Bicycle alarm
3* screws
2* capnut
1* Use Instruction