6 Pack , 12V 4W Dimmable MR16 LED Bulb , GU5.3 Base 320 Lumen 45 Degree Beam Angle LED Spotlight for Landscape, Accent, Recessed, Track Lighting MR16 standard shape: Bi-pin base (GU5.3) Low power comsumption and energy-saving No pollution, no UV, infrared and thermal radiation Low Voltage: 12VDC; DIMMABLE when working with electronic dimmers Application including accent lighting; art galleries; hotels, museums, offices, restaurants, retail and general lighting