【15 INCLINE LEVELS & QUICK BUTTONS 】 Customize your workout with 15 auto incline levels that simulate various terrains and intensify your exercise. Sunny Health & Fitness Foldable 15 Level Auto Incline Treadmill, 20" Wide Running Belt, Quiet Brushless Motor, Digital Display, 300 LB Weight Capacity, SunnyFit App Bluetooth Connection- SF-T723030.