This lamp is not worth the cheap price that was paid. The LED illuminates my smartphone three times better. We certainly do not just use it for cycling at night much less the name "bicycle light" which is a term widely wrong! This small lamp just suitable as apoint bedside lamp for reading a book in bed or in night train berths. I highly recommend this purchase. It is better to put 20 euros more in a real flagship that will serve you, rather than losing 11 in a subject that will leave (that is what I will do with this lamp) in the trash, failing to find a job useful!