Read that the heart rate monitor doesn't work in the cold although I can't seem to find the temperature. Given that the rest of the information is on the phone, I'm wondering if worth $400+ to just not have to pull phone out of pocket to control music etc. My plantronics backbeat Bluetooth headset can advance a song or raise volume like the watch. If the watch had a scrubber to advance within a song that might be worth something. Apple smart to introduce watch in u.s. in the spring so we don't ask this question. I have a week to return so am asking this question and am curious what people think.