Yowza Fitness Delray Treadmill Full 20"x60" multi-ply running belt MP3 Audio Jack and USB Charging Port 2.75 Continuous Duty Motor, Crowned rollers with sealed bearings provide superior belt tracking Patented Swing-Arm cushioning technology reduces impact stress on leg joints while improving calorie burn rate by up to 23% Built In Tablet Rack and Hi-Fidelity Speakers