AcenX 12v 4w Dimmable Mr16 LED Bulb Warm White 50watt Equivalent Mr16 LED Spotlight Bi Pin Gu5.3 Base 330 Lumen 60 Degree Beam Angle for Landscape(5pcs) Voltage: 12VDC, and a AcenX stylus is included in the package DIMMABLE when working with electronic dimmers MR16 standard shape: Bi-pin base (GU5.3), directly replace traditional halogen light bulb Low Ripple Constant Current Output Input Super Energy-saving as replacement for 50 watt Halogen light bulbs while last five times longer