6.21 in. black 6000 series tempered aircraft aluminium with anodized finish and non-slip knurled grip.Blue LED bulb for 100,000 hours and 5,000 millicandelas of power. Over 10 hours of runtime. Takes 3-AAAA alkaline batteries. Weighs 1.1 ounces. Push tail cap button for momentary on or twist for constant on/off.