Universal companion

An all-rounder for every occasion

The BUSTER 400 gives you a universal companion on the road. On the way to work or school or on a racing bike ride, 400 lumens and 120 metres of beam range keep you out of the dark. Depending on the mode selected, you can be on the road with the BUSTER 400 for up to 25 hours, and five pre-set profiles ensure greater ease of use. Precise LED indicators on the top show you just how much charge is left in the light.

Versatile thanks to five light modes


Lumens ≤ 400
Burn time ≤ 2 h


Lumens ≤ 200
Burn time ≤ 4 h


Lumens ≤ 100
Burn time ≤ 9 h


Lumens ≤ 300/400
Burn time ≤ 5 h


Lumens ≤ 100
Burn time ≤ 25 h

Sometimes you need all your light’s power on dark trails, and other times you just want to be seen – the BUSTER 400 has the right solution for any biking situation. You can choose from five different modes to adjust luminosity and battery life.


Only the modes that you need

The BUSTER 400’s five pre-set mode profiles make it very easy to use. You can select the profile that is just right for your requirements and then simply switch between modes to the one you need at the moment. For instance, there is a commuter profile displays only Night Flashing and Day Flashing modes; racing and training rides will benefit from High Mode and Day Flashing Mode.

The light with a memory

The memory function ensures that the BUSTER 400 lights up just the way it was when you shut it off – in the same mode and with the same profile selection. The profile also always stays the same as your last selection. This makes it easy for anyone to get started quickly.

Battery indicator provides an overview

The BUSTER 400 lets you keep an eye on the battery level at all times. During the ride, the six-level LED indicator continuously displays the power left in your light. When it is shut off, a short click on the On/Off button is enough to check the battery level. While charging with the USB-C cable, you can tell from the LEDs how much progress has been made. After just three hours, the BUSTER 400 is completely charged.

Compact and lightweight

Light Guide improves your lateral visibility

The SIGMA logo on the longitudinal sides of the BUSTER 400 functions as a Light Guide. This is not only a visual highlight, but also provides significantly greater lateral visibility in traffic, enhancing safety. This lets vehicle drivers and others on the road see you better.

Osram LED for a perfect lighting pattern

In urban traffic or on fast rides on roads, the BUSTER 400 keeps you from missing anything in the dark. The high-quality, high-power Osram LED and the converging lens developed specially by SIGMA gives the BUSTER 400 very even light distribution across the entire lighting pattern.


The BUSTER 400 can be mounted on the handlebars in a matter of seconds thanks to the silicone bracket. It can be positioned horizontally or vertically as needed so that it can be perfectly positioned for curved handlebars. The power light has a quick release so that it can be stowed quickly and compactly. The integrated slider allows the BUSTER 400 to be pushed on and removed conveniently. The SIGMA bike bracket fits on handlebars of 22-35 mm diameter.

Double-click for light

You can turn on the BUSTER 400 with a double click. This function ensures that you can put the light in your pocket without any trouble and without inadvertently switching it back on. A long press on the On/Off button shuts to device off again.

Ready to go even when it is wet

The BUSTER 400 keeps going even in bad weather! It is resistant to splash water in accordance with the international IPX4 standard. This means that riding to work or taking the racing bike out for a spin is no problem, even during wind and weather.


There is a universal helmet bracket for retrofitting the BUSTER 400. With this mount, the light will stay securely on your helmet – even on very bumpy night rides!

Video tip


A special adapter for the SIGMA Short and Long Butlers lets you attach the BUSTER 400 – or an action camera – right under the bike computer. This keeps your cockpit neat and clean. The adapter is available as an accessory in the online shop.

sigma stories


Art.No.: 19600

UVP: 39,95 

Out of Stock

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Features & functions

General (Lightings)
Beam range 120 m (Basis ANSI Nema FL1)
Run time 2 h in High mode, 3 h in Mid mode, 9 h in Low mode, 5 h in Night flashing mode, 30 h in Day flashing mode
Maximum light output 400 lumens
Charge time 3 h
Charge indicator Five-stage charge indicator Six-stage battery indicator
Integrated charge function Charging possible during operation
Lighting modes Five light modes: High (400 lm), Mid (200 lm), Low (100 lm), Night flashing (300/100 lm) Day flashing (100 lm)
Light battery status Short button press shows the battery status
Mode Five pre-set mode profiles Mode memory function
Lighting type Osram LED
Side visibility Light Guide for excellent side visibility
Splash resistant In accordance with IPX4
Adjustable bracket 360° Silicone mount with quick release
Tool-free mounting
Switch on protection Double click for ON
Weight 107 g (incl. bracket)


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