This Bulbamerica brand bulb uses 50W and12V. Its MR16 shape also has a GU5.3 Bi-Pin base (wide flood beam). This Xenon Halogen bulb maintains 90% of its brightness throughout its lamp life. The bulb provides a crisp, white color tone due to its unique halogen/xenon gas mixture. Its aluminized reflector immediately directs the light forward, projecting a focused bright light. It also has an Axial Filament, Dichroic Reflector with a Front Glass.