Best to Buy (6-PACK) 12V 4W MR16 LED Bulbs - 3200K Warm White 50Watt Equivalent MR16 LED Spotlights - 330 Lumen 30 Degree Beam Angle for Landscape, Recessed, Track lighting (Pack of 6)Super Energy-saving as replacement for 50 watt Halogen light bulbs while last five times longer Low 12volt lighting product, safe work voltage for human being and generate less heat than traditional light bulbs Low Voltage: 12VDC; DIMMABLE when working with electronic dimmers MR16 standard shape: Bi-pin base (GU5.3), directLY replace traditional halogen light bulb Long lifespan: Reduce re-lamp frequency. Application including accent lighting; art galleries; hotels, museums, offices, restaurants, retail and general lighting