This is my best ever lamp with cool white LED. Built "XM-L2 U3" LED exceeds the otherwise built "U2" LED's on the other, very bright lamps significantly and achieves a brightness, as they, with only one battery, hardly trusts such a compact flashlight. The range and brightness are really impressive. These three modes come (in addition to flicker), of which the average mode even for relatively long distances (about 100m) is quite sufficient. With 2900mAh battery brand the burning time in the middle mode is quite exactly 2 hours and 45 minutes. More light needs no human being in practice, at short distances there is too much light (it appears, so in turn the lowest mode). Schön is the programming of Clickys, namely: memory function, ie the lamp remembers turning off the most recently used mode, so they will start the next time in the last used mode. Ie you must not click through all modes, to go to the last used. When the battery voltage falls below a critical value, will not turn abruptly from, but they shift to a lower mode thereby signaling that she wants a fresh battery. Another thing to Clicky: he is the first of four purchased from Amazon, "low" LED lamps, which have played crazy not after a few uses. So far I could throw three lamps after about 2 inserts, because the mode constantly obstructed by itself, it suddenly became very dark or completely ran out - the other Clickys were simply big crap. This works perfectly here. In this respect: this is a really very strong and bright, compact LED lamp with new LED generation (U3) with a very well thought-out programming and enormous reach, with an unbeatable price-performance ratio.