Compared to other lamps with light function (burn time of 1 minute or more) this is here when standing still dark to go out gradually after 10-20 seconds.
The battery of the in the other review, the speech is soldered, an exchange therefore not provided (in the event that the reason for the short and weak light duration and intensity).
After about 2 years of use and in view of today's range of tail lights (for hub dynamo) I have to say: This lamp is no longer corresponds to the prior art and therefore Dislikes (= **).