In 1979, GE revolutionized microwave cooking with the introduction of the original Spacemaker oven. Today, GE Profile and GE Spacemaker ovens usher in a new era of microwave innovation. An advanced cooking system heats and defrosts with perfectly even results, and easy-to-use touchscreen menu and a 2.0 cu. ft., two-oven rack interior make microwave cooking more convenient than ever. Outside, clean lines and bold curves offer a truly dramatic look. A breakthrough in technology and design, new Spacemaker ovens are the ultimate tools for everyday cooking. Some of the features JVM1540 include Convenience Controls, Auto & Time Defrost, a 2-speed 300 CFM Venting System and Removable oven rack.