T640 MR16 Gyrus Track Fixture combines dramatic aerodynamic styling with the convenience of a front relamping gimbal ring. Features 90 degree vertical aiming capability and 358 degree rotation. Die cast aluminum construction with finish available in Silver, White or Black. Accommodates up to twoaccessories simultaneously. Clear glass lens included with fixture. One 35-75 watt, 12 volt GU5.3 MR16 bulb is required, but not included. Halogen option dimmable with a low voltage electronic dimmer. Check with bulb manufacturer for dimmer compatibility when using LED bulb option. Optional optical accessories available, sold separately. UL listed. Compatible with Juno Lighting Trac-Lites, Trac-Master 1-circuit and Trac-Master 2-circuit 120 volt line voltage track systems. Requires T537 12 volt electronic transformer, sold separately.