Summit series track and rail heads are the perfect replacements for halogen MR16's as they offer lower wattage with superior lumen output, over 10 times the rated life span, less maintenance, no projected heat, and BeamShift technology in-field changeable beam angle. All Summit series track luminaires are equipped with BeamShift technology, allowing in-field modification of beam angle simply by changing the location of the lens. Platinum Finish Made of Di-cast Aluminum Shade/Glass Color Clear Wattage 15 Voltage 120V Bulb Details LED Lamp Base LED Module LED Lumens 660 Fixture Lumens 660 Fixture Efficacy 44 Color Temp 3000K CRI 85 CRI Estimated Life 50,000 Hours Energy Star Part of the Summit Collection Listing Type Dry UL/ETL Listed Compact LED Flexrail luminaire. Energy Star rated. 120V ACLED driver not required. Beamshift Technology enables in-field change of beam angle. Die-cast aluminum construction. Power 15W Comparable 50W MR16 CRI 85 ELV Dimming 100% 10% Input 120V Rated Life 50,000 hours Warranty Info 5 Years Components/2 Years Finish Overall Dimensions 7 D x 3.75 W x 2.58 H Please note that this product is designed for use in the United States only 110 volt wiring , and may not work properly outside of the United States.