The whole body is made of black plastic material, with two knobs and two indicator lights, followed by an air outlet for hot air. In the sample I received, both knobs were worn out. The overall feeling is not bad, and it looks clean. Two knobs, one is temperature control, 0-200 degrees. One is time control, 0-30 minutes. The whole is enough. If it takes longer, you can wait for 30 minutes and continue spinning. One button is the power light, and the other button is the heating light. There is a honeycomb heating place inside, where chicken wings and sweet potatoes are baked, and the heating is still very uniform! My favorite is this double-layer baking tray. The leaking liner can discharge the roasted oil when roasting chicken wings, which is healthier! It is a non-stick surface, so it is easy to clean.