The OMNILUX UV Lamp 125W E-27 is a 125 W discharge lamp with an E27 base and an operating voltage of 125 V. It emits ultraviolet light with a wavelength of 365 nm and is designed for black-light applications, causing white textiles, objects and fluorescent materials to appear bright in darkness. The bulb measures 170 mm in length and 75 mm in diameter, has an estimated life of 5,000 hours, and must be operated with a ballast resistor.