Very good headset with many features

I use the headset in conjunction with my navigation device on a motorbike. Certainly not a typical application, but works really well. The operation is very simple and the processing well. The supplied headphones I have not tested, because Sony has not settled really serious headphones in the past its products. I use the headset in conjunction with a Sennheiser in-ear headphones. Music is very well transferred, the bass are very tired. Language (the prompts when navigating) looks natural and clear. The same applies to the use of a hands-free with a Galaxy Note I. The run time was about 7 hours in navigation mode with music transmission, making it very suitable for my purposes. The built-in radio has a good sound (assuming you're in a good reception position). The device is upgradable, that update is made quickly. Just search for the update was a little cumbersome because Sony does not really build good web pages here.