Detailed Product Description  Specification: 1. CREE XR-E P4 LED Tactical Torch 2. Battery Type: 1 X 18650 Batteries 3. Dimension: D:41mm H:132mm Description: 1. The product uses 1pcs CREE XR-E P4 LED.  2. As is made up of aluminum alloy material, the casing of the flashlight is very firm and durable. After anodized procedure, it avoids sleeking and rubbing to make it more comfortable in your hand.  3. Toughened glass lens and accidented aluminum alloy lamp cup design make the light more focused. 4. O-ring sealed, weatherproof. 5. With 1PCS 18650 batteries, it can last for 4 hour continuously.  6. Tailcap Clickie On/Off switch. 7. With waterproof, heat-resistant, wearable and straightforward design, it deals with a nasty wild environment easily.