Specification: Main material: aluminum alloy Product color: black Product size: approximately 133x15x15mm/5.23x0.59x0.59inch Net weight of product: approximately 27g Switch: Tail cover push type switch (ON/OFF) Waterproof grade: IPX4 daily life waterproof Power supply: 2 * AAA battery (not included in sales) Power: 3W Zoom mode: None, fixed focus Application fields: special lighting industries such as currency verification, tracing, amber authenticity verification, forensic medicine, fluorescent anti-counterfeiting bill seals, etc. Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Included: 1 x UV Penlight Versatile Functions: This UV LED flashlight can be used for counterfeit detection, trace inspection, fluorescent agent detection, and more. Portable Mini Size: With a shape resembling that of a pen and measuring only 13.3cm in length, this flashlight is portable and easy to carry around. Simple Operation: Designed with a simple one-switch mode, the LED UV penlight is easy to operate. Anti-Slip and Waterproof: This torch features anti-slip, wear-resistant, and standard waterproof design. Portable with Clip: Equipped with a clip, this UV LED flashlight is easy to carry and can be attached to your clothing or bag for convenient use on the go.