LIGHT SOURCE: CREE XTE 5W LED * 1; POWER SOURCE: 16340 650MAH BATTERY X 1; MAXIMUM SIZE: DIAM.27MM * 94MM; WEIGHT: 72G (WITH BATTERY); MATERIAL: ALUMINIUM ALLOY 6063-T6; FINISH: ANODIZED; SWITCH: MIDDLE- PRESS 100%-20%-OFF; DOUBLE PRESS 8HZ STROBE; LONG PRESS STEPLESS DIMMING; HEAD SLIDE TO FOCUS; BRIGHTNESS: 350LM(100%); LIGHT RANGE UP TO 150M(100%); RUNNING HOUR: 3HOURS(100%)