I don't have an apple watch yet but I just discovered that the Sennheiser lav mic is controllable by the apple watch (http://en-de.sennheiser.com/clipmic-digital). I do film making and photography as a profession and it means I don't have to carry a separate recorder or have a complicated wireless mic setup when I travel. I just put the iPhone in my interviewee's pocket, clip the lav on their shirt, and start/stop/monitor/set-mic-input-levels with the watch. This is huge for me and makes me want to buy it - a killer app if it works as advertised!! Has anyone used this setup and care to comment on it?