3w G4 LED Bulbs, 40w Halogen Bulbs Equivalent, 12V DC/AC, Warm White, 3000k G4 Bulb, Bi-pin Light Bulbs, LED Light Bulbs (6pack) 6 pcs T3 G4 Base Bi Pin JC LED Halogen Xenon Replacement Bulb 3W Consumption 20W Equivalent 200 Lumens LED G4 Replacement Bulb For use in Ceiling Lights, Pendant Lights, Desk Lamps, Table Lights, Puck Lights, Under-counter Lights, Closet Lights, Under-cabinet Lights For use in Accent Lights, Display and Landscape Lighting, RV Motorhome Caravan Automotive Marine Boats Yachts Applications Not dimmable, don't work with dimmer switch. Warm White 3000K. Don't use electronic transformers. LED bulbs work perfectly with iron core transformers.