Low noise operation: Operates at a noise level below 55 decibels, making for a quiet roasting experience. The roaster's design allows coffee bean shells to automatically fall into a collector Service:We attach great importance to our customers' shopping experience. If you have any questions, please feel free to contact us, we will reply you as soon as possible within 24 hours Efficient roasting technology: Features spiral horizontal rotation and a unique blade design for even roasting, ensuring that coffee beans are consistently stirred and heated Transparent viewing window: The stainless steel liner combined with a heat-resistant glass window allows you to easily monitor the roasting process Accurate temperature control: direct heating coupled with a precise temperature control sensor ensures stable heating, allowing for uniform expansion of the coffee beans