HQRP Professional 21 UV LED Ultraviolet Flashlight for Examining Artwork and Glass for Hidden Repairs plus UV Meter HQRP&reg; 380 nM UV LED Flashlight + HQRP&reg; UV Chain / UV Health Meter; Aluminium Body, Water Resistance, Light on By on/off Switch; LEDs: 21, Wavelength: 380-385 nanometer; Powered by 3 x AAA batteries (not included); Grate for Room, Mineral Inspection, Security Control, Rodent, Leak Detection; Art Forgery/Repair Tests, 200 days warranty!