ROCKBROS REX02 Brake Sensing Rear Light

A tail light that thinks for itself. The REX02 isn't just a flashing red light — it's an intelligent safety system that responds to how you're actually riding, so you're always visible without having to think about it.

The brake sensing feature is the standout: the moment you slow down, the light automatically switches to a steady bright mode for two seconds, giving the rider behind you a clear stop signal — the same visual cue drivers expect from a car's brake light. During the day it switches off automatically after two minutes of being stationary, then wakes back up the moment it feels movement again. In low light or at night it comes on automatically. Set it once and forget it.

Five manual modes are also available — slow flash, fast flash, breathing, flowing, and steady — for when you want direct control over your visibility profile. The 500mAh battery lasts up to 30 hours in slow flash mode, making it genuinely a charge-once-a-week light for most commuters. IPX6 waterproofing handles everything a Pacific Northwest winter can throw at it.

Two mount options are included in the box — seat tube and seat stay — so it works on virtually any bike regardless of seatpost clearance or rack setup.

A smart, reliable tail light that earns its place on any commuter or all-season build.

Specs:

• Modes: Slow flash / Fast flash / Breathing / Flowing / Steady
• Smart sensing: Auto brake detection, auto on/off by light and movement
• Battery: 500mAh, USB rechargeable
• Runtime: Up to 30h (slow flash) / 9.5h (steady)
• Waterproofing: IPX6
• Mounts: Seat tube and seat stay brackets included
• Compatible with almost all seatposts