Ge Quartz Halogen Flood Bulb 50 W 1.87 In. C-6 2900 Degrees K Carded 3 Pack 3 Pack Input Voltage: 12 volts MR16 shape with GX5.3 base for use directional fixtures such as recessed can lighting Lasts 1.8 years based on 3 hours per day usage Estimated yearly energy costs $6.02 based on 3 hours per day $0.11 per kWh.