Slope adjustment, Choose slope according to the situation.. High precision running belt，Increased friction is like a runway.. LED Display Screen: Speed/Distance/Time/Calories/Scan. Best for home exercise, convenience and portable. Our Service: We support return service, if you have any questions about the product, please feel free to contact us. Our customer service staff will answer your questions within 24 hours. And We ship from the U.S. East and the delivery time is ONLY Needs 5-8 working days!!.