Lunasea Lighting G4 10 Back Pin LED 12VAC / 10-30VDC/2W/140 Lumens Light Bulb Warm White. As with all our replacement bulbs the G4 includes a built in Buck Regulator making it the most robust on the market today and produces little heat. High Power - Low Heat Larger size brings larger light No Fire Hazard like that of Halogens Super Bright Up to 50000 Hours 10V-30VDC / 12 VAC Specifications for Lunasea Lighting G4 10 Back Pin LED 12VAC / 10-30VDC/2W/140 Lumens Light Bulb: Manufacturer: Lunasea Lighting Light Output: 140 lumens Color: White Bulb Type: LED Package Contents: Lunasea Lighting G4 10 Back Pin LED Light Bulb Lunasea Lighting LLB-21UW-21-00: G4 10 Back Pin LED 12VAC / 10-30VDC/2W/140 Lumens Light Bulb Warm White