1, if the device in the same model only a model (such as only a color and a configuration), you should indicate the manufacturer of the device in the "model" column, but also in the "specifications" column to fill in the device color, size and other information. You can also fill in the color and size of the device in the "Specification" field.
2, if you buy the equipment in the same model in more than two models (such as a variety of colors or a variety of configurations), you should indicate in the "Model" column of the equipment manufacturer's model, but also in the "Specifications" column to fill out the equipment color, size and configuration. The color, size, and configuration of the device should also be entered in the "Specification" field.