100% brand new and high quality
separate key switches can be mounted anywhere on the handle can be easily accessed, when the brake is in operation.
Easy to install, suitable for many models diameter HAndlebar.
Built-in 1200 mAh hour polymer lithium batteries (can be recharged over 500 times)
IP44 waterproof, but please do not immerse in water. safe and secure
Charging time: half an hour.
Material: high quality plastic
Switch: press cap on / off.
Size: 10x5.1 cm (LxW)
1 x speaker bike light
1 x Wireless USB.