Sunny Health & Fitness SF-T7515 Smart Treadmill with Auto Incline, Speakers, Bluetooth, LCD and Pulse Monitor, Phone… $499.99 Make sure this fits by entering your model number. Quick button auto incline – 12 levels of incline: 0% to 12% incline Speed range: 1 – 8 miles per hour. Running space 49. 5″L x 16. 5″W