Used in a busy corridor and in the trunk of a car The battery holds for more than a month without problem (I can give time a batch of conventional battery later of course), LEDs do not consume much (2 AA batteries required) The light they broadcast is white bluish pictured: they are very powerful and allow us to see in the dark without light lamp nor disturb anyone for example. The sensor has a fairly wide angle detection, is sensitive and works up to about 2m (therefore ideal for a pilot). Be careful not to put too much in the dark lamp otherwise the function to turn off when the light is not sufficient course work (two buttons allow you to decide his behavior or even turn it off completely). In the trunk of our small car daytime lamp does not light effectively. The sticks tights are perfect (yet), they can easily adhere to a wall or a metal plate. For me it is a very good buy: I bought a Philips equivalent that never worked, the better it fulfills its role!
EDIT: 01/06/2015: - After 3 months in the trunk of a car, this camera still works (thus deplete battery is based on its actual use) - After 3 months in a busy corridor: we are only at the second set of batteries