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, size-related returns, oversized items such as roof racks, and approved exchanges. 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
Light up your ride with the ROCKBROS Q4 Smart Bike Rear Light! This waterproof LED light is not only rechargeable via USB, but also serves as a smart brake light with 5 fixed and flashing modes. Stay safe on your bike with this bright and versatile light.
Rugged LED Light
Features 5 beads of COB type LED lamp, the light is bright and soft. The taillight is made of ABS and PC, which is lightweight, durable, anti-impact and corrosion resistant.
5 Light Modes
4 flashing modes: slow flash in red light, very fast flash in red light, breathing mode in 3 colors alternating and very fast flash in 3 colors alternating. 1 fixed mode: always on mode in red light. The light intensity is adjustable with 3 levels: low, medium and high.
Intelligent Detection System
Equipped with brake and vibration detection. They always light up for about 3 seconds to warn the vehicles behind when braking the bike.
260 mAh Battery
Rechargeable via usb. The rear light battery charging time is 2 hours. In addition, the light has the charge indicator in blue light. The duration is from 7 to 54 hours depending on the intensity of the light.
Waterproof and Easy to Install
Waterproof with an IPX6 rating. Easy to assemble and disassemble the light, without the need for tools. It can be installed under the bicycle seat or on the seat post.
| Brand | ROCKBROS |
| Material | Acrylonitrile Butadiene Styrene + Polycarbonate |
| Weight | Approx. 29 g (including saddle bracket) |
| Size | Approx. 30x38x25 mm |
| Battery | 3.7V 260mAh |
| Charging port | Type-C |
| Mode | 5 light modes |
| Waterproof | IPX6 |
Light up your ride with the ROCKBROS Q4 Smart Bike Rear Light! This waterproof LED light is not only rechargeable via USB, but also serves as a smart brake light with 5 fixed and flashing modes. Stay safe on your bike with this bright and versatile light.
Rugged LED Light
Features 5 beads of COB type LED lamp, the light is bright and soft. The taillight is made of ABS and PC, which is lightweight, durable, anti-impact and corrosion resistant.
5 Light Modes
4 flashing modes: slow flash in red light, very fast flash in red light, breathing mode in 3 colors alternating and very fast flash in 3 colors alternating. 1 fixed mode: always on mode in red light. The light intensity is adjustable with 3 levels: low, medium and high.
Intelligent Detection System
Equipped with brake and vibration detection. They always light up for about 3 seconds to warn the vehicles behind when braking the bike.
260 mAh Battery
Rechargeable via usb. The rear light battery charging time is 2 hours. In addition, the light has the charge indicator in blue light. The duration is from 7 to 54 hours depending on the intensity of the light.
Waterproof and Easy to Install
Waterproof with an IPX6 rating. Easy to assemble and disassemble the light, without the need for tools. It can be installed under the bicycle seat or on the seat post.
| Brand | ROCKBROS |
| Material | Acrylonitrile Butadiene Styrene + Polycarbonate |
| Weight | Approx. 29 g (including saddle bracket) |
| Size | Approx. 30x38x25 mm |
| Battery | 3.7V 260mAh |
| Charging port | Type-C |
| Mode | 5 light modes |
| Waterproof | IPX6 |
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