Inside the Raven s slim, striking and stealthy 45-facet polymer barrel is an impressive assembly of premium components, pushing 170 lumens of brilliant white Cree LED light through an advanced optical system. The two-stage pressure switch offers either intermittent or constant-on modes, along with the Double Tap option of a low secondary light level. Other features include an alloy internal frame for toughness and heat management, hardcoat anodized aluminum tail cap, and more. The Raven is powered by a 10900 Lithium-ion battery (included). This exclusive rechargeable cell features an onboard charge port and charge status indicator just plug in the included micro USB adaptor, or any quality micro USB power cord. When there isn t the time or a place to recharge, the 10900 battery can be swapped out for two common AAA disposable cells. Lithium batteries are recommended for maximum performance and reliability. Product Features Lumens: 170 (high), 15 (low) Run Time: 2 hours (high), 23 hours (low) Sleek, tapered form factor slips easily into pocket Virtually indestructible, forged steel pocket clip Includes one 10900 Lithium-ion battery