Hikari JCR-8193 - 5 Watt Halogen Light Bulb - MR11 - Flood - Open Face - 1000 Life Hours - 6 Volt Base: 2-Pin, GZ4 (4 millimeters between pins) 5 Watt, 6 Volt, 30 Degree Beam Spread Shape: MR11 (1 3/8" Diameter, 1 3/8" Length) Life: 2000 Hours