@M_A_X I know! Innit! Who doesn't want a brake light? It uses sudden drops in power output (i.e. braking) to trigger a increase in light output from its stored energy. Damned clever Germans.
I have that back light in combination with the b + M luxus iq2 front light powered by a son dynamo. It is a great bit of kit. Although you never get to see the rear light doing it's thing when you brake
@M_A_X I know! Innit! Who doesn't want a brake light? It uses sudden drops in power output (i.e. braking) to trigger a increase in light output from its stored energy. Damned clever Germans.
http://www.starbike.com/en/busch-and-mueller-toplight-line-brake-plus-braketec/