EJA Bulb - 150w 21v MR16 Lamp This Bulbamerica EJA Lamp 150W/21V Tungsten Halogen has a GX 5.3 Bi-Pin base and an MR16 shape. This EJA lamp has a rated life of 40 hours and a diameter of 2 inches. The EJA bulb is used in applicatoins as: Projectors, Microscopes, Fiberoptics, Dental Curing, Imaging