Mini Bicycle Brake Light - Waterproof LED Signal Light

A brake-triggered red signal.

A miniature red-LED bicycle brake warning light with an ABS housing and stainless-steel spring. Choose Red, Black, Light Blue or Light Green housing options.

Supplier operation and power

The listing describes automatic illumination only when the brake is applied, with no separate switch. Power source: one CR1025 battery. Supplier runtime claim: up to 50 hours; actual use and battery condition affect runtime, and battery inclusion is not established.

Check brake compatibility

The supplier refers to cable-clamp/pull disc, V and C brake arrangements. Match the actual trigger, cable travel and mounting clearance before ordering; this wording does not establish compatibility with every brake. The waterproof claim has no verified rating in the existing copy. This warning light does not replace a continuously available rear light.