UltraFire WF-502B Cree R2-WC 3-Mode 250-Lumen LED Flashlight with Clip (1*18650)

Very good flashlight, incredibly bright, well throwing. Mine came with a XR-E Q5 led instead of an XP-E P2, but that's not a big problem, it's still pretty too much britht.
The body looks well made, threads are good, o-rings are tight fit so you'll never get a drop of water inside of it.
18650 batteries last long, let's say more than one our of full light before starting to see some dimming, even if slight. look at "other thougths" part of ths review for more info about power imput vs voltage.
Has three modes, full, dim and flash. Full sometimes is way too bright (900mA at full battery), there isn't a "mid" setting, but the low light option (55mA) works really well, producing enough light ro read something near you without blinding yourself out due to the imposing flood of light. Flashing is pretty fast, maybe a good way to force sleepy friends to wake up :D not so useful, but funny.