3 1/2" high x 2 1/2" wide. Uses GU10 LED bulb, 6.5 watts to produce a light output of 500 lumens, comparable to the output of 50 watt halogen. 3000K color temperature. 90 CRI. Dimmable LED track head for use on Juno tracks by Tesler. Brushed nickel finish. Adjustable swivel design. Light averages 25,000 hours at 3 hours per day. Dimmable with LED compatible dimmers. 40 degree beam spread. Update your track lighting system with this brushed nickel LED track head. The design uses a mere 6.5 watts of energy, but has a light output of 500 lumens, comparable to a 50 watt halogen unit. The track head swivels and can be adjusted to point light just where you need it, and it is dimmable with LED compatible dimmers. For use with Juno track systems.