InverTech: The revolution of new inverter technology can bring better cooking peformance for even defrost, even heating and no more overcooking. Compact Design: The mini compact microwave is smaller than normal 17L microwave ovens but with bigger 19L capacity, which is a real compact microwave with external 17L and internal 19L size, can be suitable for any limited space; External: 43.4 32.9 24.1CM, internal: 30 29.8 20.6CM.