Hottop KN-8828B-2K (manual) sample roaster. 100–300 grams capacity (250 grams is recommended).
Bandwidth for target temperature: 80–220°C
Range for roasting time: 8–25 minutes (roasting can be stopped manually at any time)
Program memory in the device: 3 roasts can be stored in the device
Very soft roasting. Both first crack and second crack are very well heard.
A large window to see the roasting process. It's a great machine that I used 5 or so times so I'm ready to sell.