PLAY YOUR TUNES: Connect your music device to the onboard 3.5mm headphone port to listen to music through the integrated speakers on the treadmill.Keep the tool handy by placing it in its dedicated slot at the base of the treadmill. After it is folded, use the treadmill key to secure the frame in place. FOLDING TOOL: Turn the tool counterclockwise in the frame locks to fold the treadmill frame.Take advantage of the low-profile design, which makes it easy to slide the machine under surfaces and move it from room to room. EXTREMELY PORTABLE: This running treadmill can be easily and securely folded flat with the included folding key.Use the integrated pedometer to track your steps during each exercise session. View your time, distance, speed, and calories burned all at the same time. EASY-TO-USE DISPLAY: Watch your workout progress in real-time with the 4-window display.