Weight(g): 91/105 Waterproof:Yes Color: Black Battery: 4×AA 1.5V(not included) Type:Flashlights Country/Region of Manufacture:China Material: Plastic Handheld blacklight requires 4XAA batteries (DL-01) .Verify hidden security features on banknotes and passports .Check watermarks and security strips .Check paper quality on security documents .Highlight alterations and staining DC 6V battery operated *Uses 4X1.5V"AA"batteries(not include) Wattage:4W MAX. Lamp Base:G5 Operation Slide the side switch towards"tube"to switch on the UV lamp. slide the side switch towards"torch"to switch on the white lamp. To switch off slide the side switch to the centre position. Replace the batteries when the lamps begin to dim.Operating with low batteries may damage the lamp. Do not slide the side switch to the "tube"position with the UV lamp removed. This may damage the UV lamp drive circuit. Remove the batteries when the lamp is not to be used for some time. Application areas: 1.medical devices. 2.disinfection sterilization. 3.ink curing. 4.Metal crack, crack detection. 5.photocatalyst, light detection. 6.money detect detector device, 7.anti-fake detection , 8.medical measurements and biometric security testing 9.hydraulic leak. 10.According to Amber, arresting scorpions, and examination of tickets. Passport, credit card, identity card. 12.animal urine test. 13.fluorescent powder, phosphor agent detection. 14.Ore, jewelry, jade detection 15.Paper towels, facial mask, cosmetic, children's toys, books, clothes.......