They have buttons that you use to control these functions. We went through about 4 pairs of tennis shoes last year! If you really think about it . The little straps work great,no idea if I need the screen thing but it looks cool and professional . The cable ends are solidly constructed so that where the wires meet the connection is not the weak point it is on Apple cables. Simply NOT worth the price! Its a great product with plenty of space for things you might need for a long run. 5 I would, just to allow room for a thicker insole. That being said, they?ve held up great so far. Very nicely packaged.