The Knog Cobber Reflex Rear Bike Light is built for riders who want maximum rear visibility in a compact, easy-to-use design. Producing an impressive 330° beam angle, the Cobber Reflex helps you stay visible not only from behind, but also from the sides — ideal for commuting, road cycling, urban riding and low-light conditions.
With up to 250 lumens of rear output and motion-activated lighting, this rear bike light is designed to grab attention day or night. The advanced COB LED technology delivers consistent brightness for much of the battery life, while the simple single-button operation makes it easy to switch between modes on the move.
The Cobber Reflex Rear is USB rechargeable, IP67 waterproof rated, and offers up to 70 hours of runtime, making it a dependable option for everyday riders and serious cyclists alike. It also includes flexible silicone mounting straps, with compatibility for standard round tubes, aero seatposts and larger frame sections.
Key Features
- Powerful rear bike light with up to 250 lumens
- Wide 330° visibility for rear and side awareness
- Motion-activated rear safety light
- Up to 70 hours runtime
- USB rechargeable design
- IP67 waterproof rating
- Compact and lightweight
- Quick-release mounting system
- Compatible with standard and aero bike setups
- Customisable light modes via Knog’s Modemaker app
- Four light modes: High, Low, Pulse and Steady
Light Modes
| Mode | Lumens | Runtime |
|---|---|---|
| High | 75 lm | 2.5 hrs |
| Low | 20 lm | 8 hrs |
| Pulse | 250 lm | 8 hrs |
| Steady | 20 lm | 70 hrs |
