BUSTER 400 /

Daily Companions

Battery-powered bicycle light set with flashing function

With the BUSTER 400 and the BUSTER RL 80 you are safe on your bike in autumn and winter. The rechargeable BUSTER 400 front light impresses with 400 lumens, 120 metres of light range and up to 30 hours of light. Five preset profiles provide additional ease of use. Simply select the right profile for the current requirement and then switch only between the light modes that you actually need at that moment. LED indicators on the top show exactly how much power the light still has. With 80 lumens, a visibility range of 1500 metres and a runtime of up to 12 hours, the BUSTER RL 80 rear light ensures that you cannot be overlooked in road traffic. The flash modes for day and night make you even safer on your bike.


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 you cockpit neat and clean. The adapter is available as an accessory in the online shop.




Lumens ≤ 25
RUN time ≤ 2 h


Lumens ≤ 5
Run time ≤ 7 h

DAy Flashing

Lumens ≤ 80
Run time 4,5

NIGHT Flashing

Lumens ≤ 15
Run time 6,5

eco Flashing

Lumens ≤ 5
Run time 12

Full power, long burn time, or even more safety thanks to the flash mode? The BUSTER RL 80 lets you choose among five different modes – providing the right one for every situation!


The BUSTER RL 80 is equipped with three additional flash modes that make your ride even safer, day and night. The Day Flash with its two pulsing red LEDs lasts for 4.5 hours, drawing attention to the cyclist. In Night Flashing mode, the USB rear light can continue flashing for 6.5 hours. For longer rides, the Eco Flash mode provides additional visibility in road traffic for up to 12 hours.


The memory function ensures that the BUSTER RL 80 always switches back on in the mode that it was in when it was switched off. This practical feature makes it easy for anyone to get started quickly.


The BUSTER RL 80 ensures that you are seen even from the side. The rear light has a 240-degree angle of radiation, making you even more visible. This is an important safety feature, especially in city traffic.


The BUSTER RL 80 has an integrated lithium ion battery and is recharged via the USB-C port. This not only eliminates tiresome battery changes, but also saves resources, making the light sustainable. The rear light takes no more than two hours to charge completely.


A short press on the operating button shows you how much power your BUSTER RL 80 still has. This enables you to switch to a more power-conserving lighting mode if you need to. The battery indicator has three levels. This gives you confidence at all times that you have enough power to get back home.


The BUSTER RL 80 is an especially compact and lightweight rear light (just 29 grams) that you can easily stow in your pocket. Mounted on the seat post, the slim rear light fits perfectly on any bike.


Especially practical: You need no tools to mount the BUSTER RL 80. The silicone strap makes affixing it to all common seat posts easy and fast (just seconds).


The BUSTER RL 80 is resistant to splashing water in accordance with the international IPX4 standard, so it can handle a downpour with no problem. The battery-powered rear light is a reliable companion in all kinds of weather.

Switch-on protection

You can turn on the light with a double click. This function ensures that you can stow the BUSTER RL 80 in your jersey or backpack without any trouble and without inadvertently switching it back on. A long press on the On/Off button, which can be operated easily even when you have gloves on, shuts the device off again.

sigma stories

BUSTER 400 / RL 80

Art.No.: 19630

UVP: 54,95 

Out of Stock

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Features & functions - BUSTER 400

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)

Features & functions - BUSTER RL80

General (Lightings)
Visibility range 1500 m
Run time 2 h in High mode, 7 h in Low mode, 4.5 h in Day flashing mode, 6.5 h in Night flashing mode, 12 h in Eco flashing mode
Charge time 2 h
Charge indicator Three-stage battery indicator
Integrated charge function USB-C charge function
Lighting modes Five modes: High (25 lm), Low (5 lm), Day flashing (80 lm), Night flashing (15 lm), Eco flashing (5 lm)
Light battery status Short button press shows the battery status
Mode Mode memory function
Splash resistant In accordance with IPX4
Tool-free mounting with flexible silicone mount
Weight 29 g (incl. bracket)
Angle optics 240 degree wide angle optics

Service - BUSTER 400

  • Tutorial videos

  • Service Contact

Service - BUSTER RL80

  • Tutorial videos

  • Service Contact

Accessories - BUSTER 400

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Accessories - BUSTER RL80

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