Front LED Battery Operated Bike Light - Yellow



Made for improving the visibility of cyclists, whether day or night.
These LED lights effectively increase your visibility as you ride (but do not serve as a replacement for lights required by local laws).


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Visibility7 metre beam. Visible from 300 metres away. Flashing and continuous mode.
AutonomyBattery life: 32 hours/continuous mode, 44 hours/flash mode. 2 x CR032 batteries
Easy assembly / dismantlingUniversal attachment system: on bike (handlebar, etc.) or rider (helmet, etc.).
Warranty2 Years
Technical Information

B'TWIN has created the B'VISIBLE label to designate products that improve your visibility while cycling. It guarantees high-performance visibility that has been scientifically tested and approved in the lab, available on a full line of B'TWIN products.
LED brightness: 11 Lumen.
Information / Concept / Technology
Structure : 100.0% Styrene Ethylene Butadiene Styrene (SEBS) - Recycled Inside Shell - Main fabric : 100.0% Printed Circuit Board

Product test
Laboratory tests have been carried out to approve the components: batteries, battery life, UV resistance, durability, etc. The final product is then tested to simulate the durability of the assembly over time. The light is fitted to a test bike to reproduce the vibrations of cycling on a road for several thousand cycles.

Maintenance tips
Remove the electronic device from the Vioo before cleaning the flexible part with clean soapy water.


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LED front light yellow
Used for 7 to 12 months
Yet again decathlon knock it out of the park!!! Well designed and made to do the job. Passed the MK redways test with flying colours. A great product that will serve you well.
I own three of these two front and one back. My first bought last year is is still running great
Poor cheap item, lag quality control
Used for 2 to 8 weeks
Brought item,$4.90, 2weeks later 1no. need for exchange, pay carpark charge, 4 others, indicated 32hours battery life, light down less than 8hours, cheap Chinese make product
Response of the brand
Hello Carlinn!

Thank you for the feedback on our VIOO 100 front light.  Firstly, I apologies for the experience you had on our product. Indeed the light is designed to last 32 hours on continuous mode, so there could be a defect on the product or the battery.  Please visit your nearest Decathlon Store to do an exchange of the light. On top of it, we will also give you a pair of brand new CR2032 batteries to prevent the same problem from happening again. 

Decathlon City Square Mall
Carlinn found this answer helpful
Great lights but faulty battery
Used for 2 to 8 weeks
I bought three of these but the battery ran out in one of them within a week. Will cost the same to get a new battery as to buy a new light
Reasonably priced light
Used for More than 2 years
Honestly, if you want to use it during dark, it won't work and it merely acts as an indicator for others. You will hardly be able to see in dark with this light.
Response of the brand
Hello Yogesh,

Thank you for taking time out to review our product. Bicycle lights fall under two categories - TO SEE and TO BE SEEN. The VIOO 100 Front light you purchased is a to be seen light only to serve as a indicator. If you are interested to see the road in the dark, please check VIOO 700 Front ight

Hope this helps. Thank you!
Great little light
Used for More than 2 years
Great light at really reasonable price. I bought this to replace one stolen when my bike was stolen!
Used for 7 to 12 months
This back light has enormous battery life with good visibility from distance. Easy to remove and install. Overall an excellent product.
Used for More than 1 year
serves the purpose in attracting visibility to the cyclist. Does not illuminate the road.
Excellent brightness
Used for 3 to 6 months
Nice product
Used for 3 to 6 months
My son using it for 3 months and still working nicely.
Good visibility
Used for More than 1 year
Lights works perfectly and has a good visibility,, highly recommend
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