MUMENG 4PCS Warm White Super Energy-saving MR16 4W LED Bulb 300LM MR16 Base LED Bulb AC/DC12V Replaces 40W Halogen 60 Degree Beam Angle for Landscape, Track Lighting 4PCS 3500K Warm White MR16 4W LED Bulb 300LM AC/DV12V lighting product, safe work voltage for human being and generate less heat than traditional light bulbs MR16 standard shape: Bi-pin base (GU5.3), directly replace traditional halogen light bulb Size50 * 54 MM ;Weight:55g Long lifespan: Reduce re-lamp frequency. Lifespan is over 30,000 hrs. Application including accent lighting, art galleries, hotels, museums, offices, restaurants, retail and general lighting