The Excalibur RES10 Dehydrator features 10 trays with a digital controller. Multiple programs allow you to dehydrate using zone A, zone B, or both. Each zone can be set for 1 or 2 time durations and 1 or 2 temperature settings for variable food drying needs and to speed up the drying process. Programs also includes option to program and save 30 of your favorite recipes. This Dehydrator has a 99 hour 59 minute timer Dehydrates at 85 degrees Fahrenheit - 165 degrees Fahrenheit. The optimal drying temperature for herbs, fruit, meat, and much more. Paraflexx horizontal airflow distributes air for fast and even drying. Hyper wave technology fluctuates temperature for accurate drying. Includes preserve it Naturally 4th Edition. Made in the USA with USA and globally sourced materials. Your Excalibur dehydrator offers you the opportunity to cook at lower drying temperatures which increase the immunity boosting vitamin value in foods and keep it boosted for up to 9 months when stored in an airtight container. So, the next time you are looking for ways to improve your wellness, take on a tortoise mentality and know that low and slow will win the immunity race. Your body will thank you.