Hikari 00188 - JVR-8191 MR11/6V/10W/G4 MR11 Halogen Light Bulb Base: 2-Pin, GX4 (4 millimeters between pins) 10 Watt, 6 Volt, 30 Degree Beam Spread Shape: MR11 (1 3/8" Diameter, 1 3/8" Length) Life: 2000 Hours