100% brand new and high quality.
When you brake, the light will turn on (without on/off switch button).
Perfect accessory for outdoor biking or hiking.
With ultra brightness red LED light.
Warning behind vehicles keep safe distance.
Easy to install.
Waterproof design, circuit with special treatment, normal use on a rainy day.
Item type: bike brake light
Light color: red
Suitable for: V-shape brake
Battery: 1pc of CR1025 battery (included)
On/off switch button: no
Package includes: 1 x bike brake light(battery included)