HQRP Professional 365 nM Powerful 1 Watt UV LED Ultraviolet Rocks/Stones Illumination/Glow / Fluorescence Flashlight/Blacklight plus UV Meter HQRP&reg; High Power 365 nM UV 1W LED Flashlight plus HQRP&reg; UV Meter; LED: 1 Watt, Wavelength: 365-370 nanometer; Powered by 3 x AAA batteries (not included); Aluminium Body, Water Resistance, Light on By on/off Switch; 200 days warranty!