Smart Brake Sensing Bike Rear Light

Stay more visible on busy commutes, evening rides and low-light roads with a rear light that responds automatically as you ride. The ROCKBROS RB02 combines smart brake sensing, light and motion detection, and 10 selectable light modes in a compact 26g design. When slowing or braking, the light automatically increases brightness for approximately 2.5 seconds to help alert road users behind you. With up to 27 hours of battery life, USB-C charging and IPX5 water resistance, it is designed for convenient everyday use on road, mountain and commuter bikes.

Key Features

Smart Brake Sensing

The built-in brake sensor detects braking or sudden deceleration and automatically increases the rear light brightness for approximately 2.5 seconds, helping make your change in speed more noticeable to road users behind you.

Auto Sleep & Wake

Built-in light and motion sensors adapt the rear light to everyday riding conditions. After approximately 30 seconds without movement, the light can enter sleep mode to conserve power and automatically wake when vibration is detected.

10 Colourful Light Modes

Choose from 10 lighting modes, including steady red, red flash, flowing, colourful, breathing and droplet-style effects. Mode memory recalls your previous setting, so there is no need to select it again every time you ride.

Up to 27 Hours Runtime

The built-in 500mAh rechargeable battery provides approximately 19–27 hours of runtime, depending on the selected mode. USB-C charging takes around 2 hours, with charging and low-battery indicators making power management easier.

IPX5 & Flexible Mounting

The IPX5 water-resistant construction helps protect the light against everyday rain and splashes. Multiple mounting accessories allow installation around the saddle rails or seatpost, giving you greater flexibility across different bike setups.