The Whitestar 12 Volt GU5.3 Base MR16 high color temperature series of lamps were designed to provide a balanced, full spectrum MR16 for display and task lighting. These high color temperature lamps project a high luminous intensity with low ultraviolet and infrared emissions to protect artwork and valuable merchandise. Integrated front glass cover. Average lamp life is 4000 hours. 50 watt available with 6500K color temperature and 12 degree beam angle, 5300K color temperature and 36 degree beam angle, and 4200K color temperature and 12, 24 or 36 degree beam angle. Dimensions: 2 inch diameter x 1.78 inch length.