after the first version of the shuffle (very practical ...) I switched on again. And after qques weeks: -ecouteurs and controls almost inutilsables. this part seems too fragile outside the shuffle wants to be the ipod most terrain (bag, car, jogging and sports in general ...) the dc utilsiation is obviously more "intense". -The controls are not practical (pr go back a track, you have to click three times to return later dc far back, ....) -except error not change helmet if more orders dc more ipod! -Finally, the controls are on the helmets, can not connect the unit to a radio or its internal speaker. In short, not practical at all.