High power UV SMD LED produces a 395 to 400nm bright glow. Operates 4.4VDC @ 0.115Amp (0.5 Watt). Viewing angle is 125°. Great for viewing invisible UV inks, scorpions, UV minerals, Vaseline glass, Radium watch hands, etc. UV LED must be mounted to heatsink for continuous operation. Case size is 3mm wide x 5.8mm long. Factory prime. Sold in a package of 4.