Characteristics Designed for improving the visibility of cyclists, during the day or at night.Self-powered, battery-free light.
Visibility2 white LEDs at the front / 2 red LEDs at the rear
AutonomyPowered by a magnetic field when pedalling (no battery). Flashing mode only.
Easy assembly / dismantlingScrews on to the spokes. Not designed for use on bikes with disc brakes.
Product restrictionsNot a substitute for mandatory cycle lights
Product catchlineSelf-sufficient visibility accessory.
1.3 / 5
3 users recommend this product
Do not buy18/10/2016Response of the brandDear sir,
Thanks for your feedback. I will pass all of this on to the product manger at b'Twin. Your comments are duly noted.
The fact they they don't work with disc bikes and they mount on the left hand side is highlighted on the website but as far as I can see this is not as clear on the packaging.
I the meantime, please return them to us for a refund.
Peter Lazarus UK Cycling Market Manager DECATHLON
Tricky06/03/2016Fit once (eventually) and forget (no batteries)Lights only flash when bike is moving
Do not buy05/08/2015Great idea if there was dérailleur clearanceLack of clearance broke my dérailleur hangerResponse of the brandDear sir,
The rear light can indeed only be mounted on the left hand side of the bike (facing the kerb in UK). I will add this to the website product description.
Neither can they be mounted on bikes with disc brakes.
I trust you were refunded the costs of the lights in store.
Peter Lazarus UK Cycling Market Manager DECATHLONBenjaman was satisfied with this answer