Designed for Halo track systems, this contemporary 17 watt LED track head features a white finish. This energy-efficient track head is dimmable, boasts a 1330 lumen light output, and boasts an average lifespan of 35,000 hours if used a maximum of three hours per day. By Cal Lighting.- Head is 8 1/2" wide x 4 3/4" high x 2 1/2" long. - Consumes 17 watts to produce a light output of 1330 lumens, comparable to a 100 watt incandescent bulb. 4000K color temperature. 80 CRI. - Energy-efficient 35 watt LED track head. 120 volts. - White finish.- For use with Halo track lighting systems.- Dimmable with an LED-rated dimmer.- Bulb averages 35,000 hours at 3 hours per day.