G4 LED Halogen Replacement Bulbs are available at both 12 volt and 24 volt. 12 Volt bulbs work for both AC 12V and DC 12V, however, 24 Volt bulbs work for DC 10-30V, typically DC 24V. So, they are widely applied for marine, boats, yachts, automotives, caravans, motor home and households. G4 LED Bulbs are available in cool white and warm white colors. Compared with standard G4 capsule lamps, retrofitted LED G4 bulbs are oversized and they have different entries varying from fixtures and applications. Our G4 LED bulbs use high power led and SMD 5050 LED so that they reach high lumen output and cost-effective goals.