Nitecore MT06 LED Penlight,165 Lumens Specifications for Nitecore MT06 Flashlight: Output: 165 Lumens Runtime: 5 Hours 15 Minutes Impact Resistance: 1.5m Length: 5.04" (128mm) head Diameter: .55" (14mm) Tail Diameter: .55" (14mm) Weight: .78oz (22 gram) (without battery) Features of Nitecore MT06 165 Lumen Flashlight: Powered by 2 AAA batteries Two brightness levels Reverse rear switch design for one-handed operations High efficiency constant current circuitry provides unwavering and dependable output Stainless steel clip Toughened ultra-clear mineral glass w/anti-reflective coating Constructed from aerospace grade aluminum alloy HAIII military grade hard-anodized Waterproof in accordance with IPX-8