EagleTac D25LC2 Clicky CREE XM-L2 U2 LED Flashlight - 850 Lumens - w/ Bonus Keychain Light 850 lumens features latest Cree XM-L2 U2 LED - most powerful Penlight available 4 Different Brightness Setting & Strobe: 850lm/1hr, 557lm/1.8hr, 69lm/15hr, 7lm/100hr Use 1x18650 or 2xCR123A Batteries Include a bright bonus keychain light (25 lumens) with momentary & on/off switch 10 Years warranty service, buy with confidence!