A G4 light bulb is a bi-pin base lamp that runs off a low-voltage power supply. "G4" is a base designation which means the base has two pins and the gap width between the pins (center to center) is 4 millimeters.
5 x G4 LED Bulbs,12V 2W 150LM Warm White 3000K No-Dimmable 10W 15W 20W Halogen
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(Pack of 10) LED G4 Light Bulb (Lamp) 2W 200LM 3000K
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Newhouse Lighting 20-Watt Equivalent GY6.35 Halogen Replacement LED Light Bulb Warm White (4-Pack) GY6-2320-4 - The Home Depot
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