Item Type: UV Flashlight Length: Approx. 130mm / 5.12in Head Diameter: Approx. 30mm / 1.18in Tail Diameter: Approx. 22mm / 0.87in Power Supply Battery: 1 x 18650 lithium battery, not included. Wavelength: 365nm Power: 5W Light Source: Purple Light Application: For the inspection of scorpion, pet urine, etc., can also be used for resin curing. Weight: 100 g / 3.53 oz(approx.) 1For Inspection: Can emit 365nm UV light for smart inspection. Where the is fluorescent light, there is your targeted area. 2Practical Uses: Also widely applied for the testing of banknotes, stamps, fluorescent agents, etc. as well as glue curing. 3Saving Energy: Powered by a 18650 lithium battery, the wireless UV flashlight enables more flexibility for your operation. 4Simpler Works: Just insert the battery and press the bottom switch to turn on the light, then you can start the inspection. 5Easy Carrying: Designed to have a light weight and a compact size, the blacklight allows for simpler storage and carrying.1 x UV Flashlight