Bothered by little problems encountered with a model suggested by Apple (MOX 680i Sports, micro problem), I just tested this and am very satisfied. Pairing with my Iphone as my Mac did not present any particular difficulty, once philosophy gained. The sound quality is very satisfactory, and functionality "OpenMic" is simply brilliant. All secondary functions work perfectly with the iPhone in iOS 4.1. A small trial in a 10km did not present any particular problem (Good but no discomfort) except some sensitivity to the wind.