TEN-TAP® programming – Choice of three user selectable programs: 1) high/strobe/low 2) high only 3) low/medium/high High for maximum illumination: 1000 lumens; 219m beam; runs 1.5 hours Medium for bright light and longer run time: 380 lumens; 133m beam; runs 3.5 hours Low for a less intense beam and extended run time: 65 lumens; 53m beam; runs 23 hours Strobe for signaling or disorienting: runs 1.5 hours Uses rechargeable lithium ion battery (P/N 74175); also accepts two (2) CR123A lithium batteries or Streamlight SL-B26® protected Li-Ion USB rechargeable battery pack Self-adjusting battery cradle secures multiple battery sizes and eliminates battery rattle Durable, anodized aluminum construction Water-resistant sliding metal sleeve protects USB port Includes USB cord, removable pocket clip and tear resistant nylon holster Multi-function, push-button tail switch for one-handed operation Anti-roll head prevents the light from rolling away when you set it down IPX4 water-resistant; 1m impact resistance tested 6.50 in (16.5 cm); 7.2 oz. (204 g) with Li-Ion rechargeable battery (included) RoHS compliant Limited lifetime warranty