Eiko brand MR16 halogen spot. 50 Watts for more power and light. 12 volts for low voltage systems. Low voltage means a smaller fillament, for greater optical control.
Halogen lights provide brighter, whiter light than incandescents, while maintaining outstanding color rendering
Spot means 13º beam spread and a very narrow, powerful beam of light. Lamp can be much farther away and still light the area effectively
Dichroic reflector reflects visible light out the front while letting heat escape out the back, resulting in a cool beam of light
Glass lens - enclosed fixture not required