And indeed. The lamps are very bright Because the small LED protrude slightly, you are good to see from the side, and even sees himself a little. However, this lighting is not sufficient for highway code, unless it is a sport bike (
So far, the batteries last even. These lamps have been 1.5 months in our possession, and came so far about 15 evenings used.
Can be attached easily. For slightly thicker seatpost or handlebars have to require some force, but keeps well and does not look as if it would tear quickly.
