I use the flashlight from Maglite almost exclusively professional and am very happy with it. By corrugated surface it sits comfortably in the hand and does not slide is accidentally off. Thank goodness it was equipped with a belt clip. In another Mag-Lite flashlight clip without the problem was that she always rolled away on uneven surfaces. This is excluded here. The most important: the luminosity is yes for such a small flashlight unbeatable! Without further ado: me prefers always a smile on your face when I turn on the lamp. The three operating modes are very well thought out: it press once: light is only so long you press, twice in quick succession it press: light is constantly at maximum brightness. Three times pressed in quick succession: lamp lights constantly lower luminosity (easy on the battery). For me the ideal companion! For battery drain, I can not say anything yet.