







Some pre-sale items are shipped via international express, which may result in longer delivery times and additional shipping fees. Exact details will be shown at checkout.
We offer a 14-day return and exchange policy from the date you receive your item. Items must be unused, undamaged, with tags attached, in original packaging, and accompanied by proof of purchase.
We cover return shipping for quality issues, defective, damaged, or incorrect items. For other personal-reason returns, the customer is responsible for return shipping.
For full order cancellations within 14 days, the original standard delivery cost will be refunded. Partial returns generally do not include a refund of the original delivery cost.
Refunds will be processed within 5–7 business days after we receive and inspect your return. Please contact us before returning any item. For questions, email service@rockbrossport.co.uk.
Estimated delivery time

Stay visible and communicate your movements more clearly with a rear light designed for everyday riding. This smart bike rear light features intelligent brake sensing that automatically increases brightness when slowing down, helping alert traffic behind you. Automatic sleep and vibration wake-up functions help extend battery life between rides, while multiple lighting modes and colour options let you adapt your visibility to different conditions. Finished with a durable aluminium alloy housing and USB-C charging, it is built for commuting, training rides and night cycling in all weather.
The integrated brake sensor automatically increases brightness when rapid deceleration is detected, helping make your braking intentions more noticeable to vehicles and cyclists behind. In standard mode, the light also enters sleep mode when stationary and wakes automatically when vibration is detected.
Choose from 7 light colours and 5 lighting modes, including steady, red-blue alternating, red flashing, dual-side flashing and breathing mode. Switch easily between modes to improve visibility both day and night while adding a personalised look to your bike.
Powered by a built-in 300 mAh rechargeable battery, the rear light delivers approximately 15–80 hours of runtime depending on the selected mode. Four LED indicators display the remaining battery level, while the USB-C charging port provides fast and convenient charging.
The lightweight aluminium alloy casing offers excellent impact and wear resistance for dependable everyday performance. Its slim, modern design complements both road bikes and mountain bikes without adding unnecessary bulk.
Securely mounts to either the seatpost or saddle rails using the included cable ties without requiring any tools. Weighing only 30 g, it can also be attached to backpacks, helmets, scooters and other outdoor equipment for added visibility.
Stay visible and communicate your movements more clearly with a rear light designed for everyday riding. This smart bike rear light features intelligent brake sensing that automatically increases brightness when slowing down, helping alert traffic behind you. Automatic sleep and vibration wake-up functions help extend battery life between rides, while multiple lighting modes and colour options let you adapt your visibility to different conditions. Finished with a durable aluminium alloy housing and USB-C charging, it is built for commuting, training rides and night cycling in all weather.
The integrated brake sensor automatically increases brightness when rapid deceleration is detected, helping make your braking intentions more noticeable to vehicles and cyclists behind. In standard mode, the light also enters sleep mode when stationary and wakes automatically when vibration is detected.
Choose from 7 light colours and 5 lighting modes, including steady, red-blue alternating, red flashing, dual-side flashing and breathing mode. Switch easily between modes to improve visibility both day and night while adding a personalised look to your bike.
Powered by a built-in 300 mAh rechargeable battery, the rear light delivers approximately 15–80 hours of runtime depending on the selected mode. Four LED indicators display the remaining battery level, while the USB-C charging port provides fast and convenient charging.
The lightweight aluminium alloy casing offers excellent impact and wear resistance for dependable everyday performance. Its slim, modern design complements both road bikes and mountain bikes without adding unnecessary bulk.
Securely mounts to either the seatpost or saddle rails using the included cable ties without requiring any tools. Weighing only 30 g, it can also be attached to backpacks, helmets, scooters and other outdoor equipment for added visibility.
Learn more
ROCKBROS
Approx. 30 g
Aluminum alloy, plastic
300mAh