I’ve had it for about 3 weeks now, and am very happy with it. The sound quality is better than I expected, and I find it to be very comfortable to wear – even when working out. This is a behind-the-head design that fits well, is comfortable, and pairs easily with the iPhone.
Call sound quality is pretty good, too. You pick up a bit of wind noise sometimes (the microphone is integrated into one of the earpiece assemblies), but it does a good job of filtering common types of background noise. One note: when you answer a call, the audio isn’t stereo – it goes into one ear only, but the iPhone (as always) seamlessly turns down whatever you’re listening to until the call is over.
The controls are easy to use – they are on the side of the headset and allow you to play, pause, adjust volume and answer calls.
However, the controls are the source of my only complaint: there are previous track / next track controls on this headset which work on another Bluetooth device I own. For some reason, the iPhone (any version, from what I can tell) doesn’t yet support the next track / previous track buttons (they just beep when you press them). I’m hoping that comes later.
The battery life is good (I find I have to recharge it about once a week after a fair amount of use), and it comes with its own AC adapter that plugs into a mini-USB port on the headset.
All in all, I’m very happy with the MotoROKR S9, and am longing for the day when Apple adds support for the previous track / next track controls.