It can track your performance in time . speed . distance . and calories burnt. A safety emergency key with a clip connects you to the treadmill . stops it immediately in an emergency . and protects you during exercise.After exercise . the portable treadmill can be easily folded up and the folding area is 25″(L) x 24″(W) x 48″(H). The 2 built-in transportation wheels make the treadmill easy to move around and store in a small place at home.The foldable treadmill has a built-in Bluetooth speaker . so you can enjoy music while exercising . providing you with a relaxing exercise environment. The console is equipped with 2 water bottle cages and a media rack for storing tablets . books . and phones to meet your various needs in sports.You can match your phone via Bluetooth with the treadmill to play music while you are running.This folding treadmill has a 3-level incline that adjusts the angle of the whole treadmill. With it . you can experience different running modes.