The Fenix TK09 Flashlight drives an output to 450 lumens and features an exclusive Tactical Tap switch which provides instant access to momentary-on, constant-on and output selection. Knurled Black anodized body withfront and rear self-defense crowns. Utilized a Cree XP-G2 R5 LED. Powered by two CR123A batteries or one 18650 battery. Low energy warning function. Size: Length: 130mm x 25.4mm body x 34mm head. Weight: 114gm. ANSI/NEMA FL 1 Standard: --High: 450 lumens for 2 hours. --Mid: 130 lumens for 7 hours. --Low: 15 lumens for 65 hours.