GE 63007 43 watt 565-lumen reveal halogen A19 light bulb, frosted reveal, lumen output and 43 watt used, lumen measure brightness of a light bulb, watt measure electricity used to create light saves energy has similar. lumen light output as a standard 60 watt but only uses 43 watt. This halogen bulb has an A19 shape and rated life of 1000 hour. Lumen is the new watt. Better technology provides the same amount of brightness lumen while using less electricity watt. This frosted reveal halogen bulb is specially made to filter out dull rays produced by standard incandescent bulbs. Halogen lamps provide a small, white light source with excellent color rendering. Unlike standard incandescent lamps, halogen lamps use a halogen gas which allows the bulbs to burn longer without sacrificing light output. Compared to incandescent lamps, halogen lamps provide crisp white light, excellent beam control, compact size, high lumen maintenance and a longer life.