BESTSUN Mini Flashlight Pen Light, 5PCS Penlight Flashlight Ultra Bright Torch Portable Waterproof 1000LM Small Flashlights with Clip Mini Medical Penlight AAA Battery Super Bright, but due to the small size design, not easy to distribute heat, it heats up after some time of use while light on, just don't worry, safe completely, warm and bright in this winter! LED type: High Quality CREE XP-E R3. Material:Aircraft Aluminum. Skid-proof/Non-slip, abrasion resistance and ordinary waterproof design. The mini pen torch maximum output brightness can up to 1000 lumens. Dimension: 90 x 15mm (Length * diameter) Operating voltage: 0.8-1.5V. Switch: Tail-cap (ON/OFF) Reflector: Orange peel aluminum reflector. Waterproof level: Daily life waterproof. Comes with a clip, suitable for carrying around. Skid-proof, abrasion resistance and ordinary waterproof design.100% Brand New and High Quality,Power source: 1 * AAA battery (not included) Easy to carry. The pocket tactical pen flashlight comes with a clip, suitable for carrying around, like finding your car, or following a path from the parking lot to the meeting room, BBQing at night, etc.