Output: 59 lumens. Advanced focus system - spot to flood. Designed for tactical use. Rear tail cap switch. Aircraft grade aluminium casing. Power Tranformation Technology (PPT). Burn time: up to 8 hours. Dimensions: 115 x 26 mm. Weight: 84 gms. Effective range: 0 - 305 feet. Power supply: 1 x AA alkaline batteries.