1) Higher Efficiency & Less Energy :Two capacity CR123A Lithium battery (3V 1400mAh), The illuminating time is up to 180 minutes. 2) Super Lamp: Use Seoul LED (or Cree LED , or Lumen LED , optional), the high quality reflector cup which we design and is made with special total metal, and the steel lens (95%) which is high strength and good light penetrability 3) Novel Design: Modularization design of interior flashlight without joint line and soldering spots, two layers of waterproof washer 4) High Quality Materials: 6063 watering cool dealed aluminium material, and the surface can be dealed through cool anodized and Mil-Spec Type III hard anodized (optional) 5) Double Protective: Reverse protective and short circuit protective settings in the interior lamp, and over-heated protective and explode-proof protective settings in the interior battery 6) Overall Dimension:§¶35*145mm