The Excalibur D500TB 5 Tray Food Dehydrator with Timer – Twilight Black is a great way to make and enjoy delicious dried foods and snacks. This unit is designed for outstanding style and functionality, as it looks great on your counter and offers a user-friendly design. It comes with five spacious trays for quality dehydrating. It's made of a durable polycarbonate material and features patented Excalibur Parallex Horizontal Air Flow and Hyperwave Fluctuation Technology that quickly and efficiently heats and dries your foods. Other features include a built-in timer, adjustable thermostat, and Preserve It Naturally, an excellent book with 192 color pages that provides you everything on using dehydrators along with many recipes, as well as The Guide to Dehydration, a 28-page book with "How To"guide and tips.