Pocket Clip: Penlight flashlight with its pocket clip design, it can easily attach to your belt, bag or pants pocket. Material: Our LED flashlight is made of aluminum alloy construction with shatterproof scratch-resistant lens and pocket clip. Super Bright: The size of the Mini pen flashlight is 9.1x1.4 cm / 3.58x0.55 inch. It requires one AAA battery (not included) for power. Compact: This mini pen flashlight fits in tight spaces and illuminates hard-to-see work areas (without battery). Waterproof Design: LED flashlight can work reliably under rainy and snowy conditions, accidental drops, temporary flooding, etc.