Transparent lid with four observation holes The lid is transparent glass with four holes, allowing you to observe the beans during the baking process at any time. Benefit: monitor roast progress without opening the unit, helping you control results. Nonstick chassis for easy cleaning and even heating The bottom of the pot uses foodgrade Teflon for a safe, hygienic surface. Provides even heat distribution and prevents sticking, so bean shapes are preserved during roasting. Benefit: easier cleanup and consistent results across batches. Wide temperature range for versatile roasting Temperature can be adjusted from 100 C to 240 C. You can set the heat to suit different roasting profiles or bake other items beyond coffee beans. Benefit: precise control to achieve desired roast levels and broaden use cases. Large capacity for bulk roasting Equipped with a large tank with a capacity of 800G. Lets you roast a lot of coffee beans at once, quickly and easily. roasted bean quantity per batch is 300g to 500g. Benefit: efficient batch production with minimal handling. Use scenarios Home roasting: roast small to medium batches to experiment with roast levels and flavor development, while easily monitoring progress through the transparent lid. Small cafe or office setting: prepare daily or weekly bean supply in larger batches to meet demand with consistent results. Bean testing and development: compare different beans and roast profiles in the same session, using the wide temperature range to dial in precise temperatures and roast outcomes.