LED MR-16 bulb design to fit into standard low voltage fixtures. Can be purchased in a 15 degree, 30 degree, 60 degree, or 120 degree light spread. Comes in three standard wattages. 4 watt is a 20 watt halogen equivalent. 5 watt is a 35 watt halogen equivalent. 7 watt is a 50 watt halogen equivalent. 3 color temperatures available, 2700k, 3000k, and 5700k. Lumen output is between 260 to 560 depending on wattage and color temperature used. Dimmable and has a 50,000 hour lamp life.