It is clear from the pictures that it has been used once, with temperature control and rotation speed adjustment. Its design looks a bit inclined to provide an excellent performance for roasting coffee beans. You can even control the roasting level - light, dark, or medium - resulting in excellent roasting. It doesn't have a glass lid. You have the right to try and see it yourself. Its price is reasonable when new. As shown, it features an S-shaped heating element to distribute heat evenly.