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.
Country of origin
The country in which, according to the manufacturer, the model is manufactured. Even though most of the capacities are located in China, European factories for the production of household appliances have not disappeared. And some models can be produced on them. In general, such a division into a Chinese or European factory should not particularly affect the quality of products but the stereotype of a reliable European assembly is present. However, it is possible that the model may have a country of manufacture, for example, Poland, and in the store, under the same article, you will meet China.
