MR16 Halogen Bulb w/Reflector, 12V 10W (Retail Pack)
"MR" refers to Multifaceted Reflector, which produces a softer edge to the area of illumination than a smooth reflector.
MR number refers to bulb face diameter in eighths of an inch. MR16 = 16/8" = 2" Diameter.
• Approximately 3,000 hour life