The Fenix TK20R micro-USB rechargeable flashlight delivers a maximum beam distance of over 1000 feet (310m) by utilizing the CREE XPL HI V3 LED with a maximum output of 1000 lumens. Powered by a rechargeable 18650 battery, this flashlight can also use two cold-resistant CR123As as standby batteries. Features included a dual layer body, inner waterproofing treatment, a tactical tail switch along with a side switch, and battery power indicator. This compact flashlight is designed for tactical and industrial applications. FEATURES: ---Flashlight Size: --Length: 6.0" (151.5mm) --Diameter: 1.0" (25mm) --Head: 1.3" (34mm) --Flashlight Weight: 5.0 oz. (141g) excluding battery ---Batteries: One 18650 rechargeable Li-ion battery (included) ---Included: Fenix 3.6V/2900mAh 18650 rechargeable battery, USB charging cable, holster, lanyard, spare O-ring ---Warranty: Limited Lifetime Guarantee from Fenix Lighting U.S. ANSI/PLATO FL 1 Standard Specs: using 2600mHa battery included, (runtimes longer with higher capacity battery, sold separately) --Turbo: 1000 Lumens for 1 hr 30min. --High: 350 Lumens for 4 hours. --Med: 150 Lumens for 10 hours 30 min. --Low: 10 Lumens for 135 hours. --Strobe: 1000 Lumens. PRC