Baby name: WindFire J18 Q5 focus flashlight use light source: the United States imports CREE Q5 shell material: space level improved 6061 - T6 aluminum lens material: imported resin UCL convex lens lighting duration: 3 to 15 hours flux: light 240 lumens and 180 lumens weak light size: 150/160 of the total length of 30 mm mm * handle 26 mm tail weight: 140 g or so in addition to the focus, this flashlight mode and third adjustable flashlight waterproof level: IP67 (splash water drench daily, not diving) range: A long shot of about 200 meters