Lytespan Alcyon MR16 MIni Cylinder track head features a wireless stem profile with infinite horizontal rotation and 0-90 degree vertical adjustment. Includes an integral glass shield for use with unshielded lamps. Class 2 12 volt electronic transformer included. Finish available in Matte White, Matte Black or Metallic Aluminum. One 50 watt, 12 volt GU5.3 MR16 halogen lamp without lens or one 37 watt, 12 volt GU5.3 MR16 halogen lamp with lens is required, but not included. UL listed. 2.5 inch width x 2.75 inch depth x 5.25 inch length. Compatible with Lytespan Basic 1-circuit, Advent 1 or 2 circuit, and Radius 1-circuit track systems.