Otherwise you will constantly have volume problems. I bought this for hanging up my soft gun cases. Heres the thing: Its battery life IS truly long, and its sound quality is awesome! The hassle to try and make this wortk isnt worth it. Save your money and buy a better pair because these are junk. However, since I have been wearing them more often, the straps are moving into the position I like and my feet feel great. The covers on the earbuds have stayed secure even with daily use. 9mm. Supper happy with my purchase. Its now a paperweight.