... power is behind the tail, high efficiency, white LED to live as long as 10 million.3. Waterproof structure optimization design ... discharge bright light about 60 hours work, reflective glass with aluminum material, gather light adjustable, USES toughened glass lenses.4. ... 10-12 h9 maximum range :1000 m10 Shape dimension: 115 x 195 mm11 N.W.: 1.2KGS china mini 9 led aluminum flashlight factory