Capacity
The higher the capacity, the more food can be cooked at once. A microwave oven with a volume of up to 20 litres is suitable for heating one plate. In a model with a volume of more than 28 litres, you can already put a whole pan.
Power
The higher the power of the microwave, the faster the food is heated. The vast majority of models provide the ability to adjust it. It is believed that for comfortable cooking you need to purchase a model with a power of at least 900 watts. If you plan to use the microwave oven exclusively for heating food, you can get by with less powerful models.
Turntable diameter
The larger the diameter of the table, the larger dishes can be used in the oven. This spec directly depends on the volume of the microwave oven.
Power levels
It is the number of fixed power levels provided in the design of the microwave. The more such levels, the wider the capabilities of the device because different tasks require different heating intensities.
Steam cleaning
The inside of the microwave oven is cleaned with hot steam. A container with water is placed inside, and a steam programme is turned on. The resulting steam softens even old dirt, and after processing, it is removed with a regular rag or sponge easily.