Flash through the night

Flashing rear light with brake light function

Safe day and night with the BLAZE FLASH: The SIGMA rear light features not only a brake light function, but also two flash modes, making it even more visible on and off road. The integrated brightness sensor automatically activates the bike light when visibility conditions are poor. 500 meters of visibility range; 50 hours of burn time; cost-effective, multifaceted, and user-friendly: the BLAZE FLASH is a true all-rounder for any seat post!

Four light modes – plus the brake light

Auto sensor

Visibility range ≤ 500 m
Burn time ≤ 9 h

Manual continuous light

Visibility range ≤ 500 m
Burn time ≤ 9 h


Visibility range ≤ 500 m
Burn time ≤ 11 h


Visibility range ≤ 500 m
Burn time ≤ 50 h

Brake light

Visibility range ≤ 1500 m
Burn time ca. 3 s

The BLAZE FLASH has four modes to choose from. In addition to the static continuous light, there is the auto sensor light, which activates automatically when it gets dark thanks to the brightness sensor. Another highlight is the two flashing modes, Pulse Flash and Eco Flash. In all options, the acceleration sensor triggers the brake light for about three seconds. This rear light is guaranteed to draw the attention of the person behind you in traffic in plenty of time!

Brake light for day and night

An integrated brake light for more safety: Three bright LEDs signal braking to others on the road for about three seconds thanks to the integrated acceleration sensor. The brake light can be used during the day without being continuously lit, giving you more visibility in road traffic. It is also an extremely helpful feature for group rides.

Automatically well-lit

Always visible when you need to be: In Auto mode, the integrated brightness sensor detects the ambient light and automatically switches the rear light on and off as needed. This saves battery charge and is ideal for situations such as passing through tunnels or riding on dark forest roads.

Long-lived flash modes

The BLAZE FLASH not only is able to light up constantly, but also has two innovative flash modes. Pulse Flash with its three pulsing red LEDs lasts for eleven hours, drawing attention to the cyclist. Eco Flash lasts even longer (up to 50 hours) with one flashing red LED. The ability to switch to an energy-saving mode is very useful, especially on long tours.


The BLAZE FLASH rear light has an integrated battery. It is charged via the Micro-USB socket, which can also be used with any PC. The supplied Micro-USB cable can be used to charge the rear light completely in three hours. This saves money and protects the environment.

Battery/charge indicator

Flexible mounting

The silicone strap included in delivery can be used to attach the BLAZE FLASH to all common seat posts quickly and without tools, so it can be used with different bikes.


The BLAZE FLASH rear light is protected against splashing water according to the international IPX4 standard, making it eminently suited to inclement weather conditions.

Also Available as set


sigma stories


Art.No.: 15110

UVP: 27,95 

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Features & functions

General (Lightings)
Visibility range 500 m
Run time 9 h (Standard), 11 h (Puls flashing), 50 h Eco flashing
Charge time 3 h
Charge indicator Two-stage battery indicator
Integrated charge function Micro USB charge function
3 LED brake light function
Side visibility
Splash resistant In accordance with IPX4
Tool-free mounting with flexible silicone mount
Weight 22 g
Day and night mode


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