The official names for this item is the Gourmia GTA-2500 Digital Electric Air Fryer.
At the heart of it, it is a 120 v 1250 watt convection oven with a drum and rotisserie that will roast 1 kg of cocoa beans.
It comes with a ton of parts and accessories, various pre-sets and a not stunning manual. None of that really matters for our purposes as I am going to tell you exactly what you need to know to roast cocoa beans.
If you want to air fry some potatoes, or bake a pizza, that is on you.
All you need to really know is that you are going to use the Turbo pre-set, and will be manually adjusting the temperature and times to suit your needs.
It comes with a 1 year manufactures warranty. It is very helpful to have both a heat resistant pair of gloves and an IR thermometer to properly use this roaster.