Update
After a year of continuous use:
The air-fryer device is an air oven, like the kitchen oven, but due to its relatively small size and high temperature, it cooks very quickly. So whatever I used to make there, I now make it in the multicooker, faster, more economically, and without making a mess.
Vegetables (peppers, cauliflower, etc.) cook very quickly and very deliciously, meat becomes juicy fillets. Chicken breast and fillet are amazing. Very convenient with the glass door and the light, you can see what's happening. Overall, very satisfied with the speed and cooking. I think its capacity is the largest. The only negative so far is the fried potatoes, which, when fresh and cut into 1cm thick slices using a potato cutter, in a quantity that serves three people, took 40 minutes to fry. If the quantity was small, then the time would be much shorter.
In conclusion, I would buy it again