This 30W LED bulb is an energy saving alternative to traditional halogen, CFL and MH (metal halide) bulbs. Operates on a conventional medium screw base without the need for a ballast or long warm up times associated with CFL. Consider the energy savings and longevity of this led bulb designed with Cree leds for superior operating life lasting 20 times longer than traditional light bulbs. The housing is constructed from aviation quality aluminum that is both light weight and high strength. This bulb has excellent color chromaticity with a color rendering index of 85 (CRI). Color temperature range of 5700K to 6000K (full spectrum daylight). Intensity approximately 3200 lumens consuming 30W. Superior luminous efficacy exceeding 100%. Not omni-directional with a light distribution of 180 degrees. Operates at 110VAC. Not dimmable. A37 Jumbo size bulb, width of " and height of ".