The RP64 is OnSiteLED's ETL-listed, energy-efficient LED replacement for standard PAR64 incandescent light bulbs. They are an easy, drop-in replacement for your old bulbs, compatible with existing fixtures, dimmer systems and wiring. Just plug it in and go! RP64 LED lamps use 1/10th the power of a 1000 watt bulb and produce significantly less heat. The tool-less, interchangeable reflector optics allow you to select the bulb's beam angle on the fly, without changing lamps! KEY FEATURES OF THE RP64 1 - 12000 to 14000 lumen LED that's available in 2700K to 6500K CCT color temperatures and up to 97 CRI 2 - All-metal enclosure with 8-inch diameter mount to fit all standard Par64 fixtures. Designed and made in the USA 3 - Six choices of interchangeable reflectors for quick and easy light pattern changes. No tools or lamp swap required! 4 - Ultra efficient 100W power supply, tested and compliant to UL 8750 standard, line power use is ~0.83A at 120 VAC 5 - Fitted with ''Super Silence' series fan for cool and quiet running at less than 11dB 6 - True drop in bulb replacement, 'plug and play' into any fixture with a mogul plug socket