Had this 2 years ago, I think I would have liked this watch a lot, BUT I can not get it to work with my phone(an HTC droid incredible). Sony has dropped support for Liveware, which you need for anything below android 4.3. While they were previously supporting use with other phones, it is now under xperia support. They no longer have a list of supported phones on the web site and no longer have the softeware needed to connect older phones.
When I plugged in my phone and the(charged watch, I got a message that I needed to install liveware. It redirected me to Google play, where I was presented with liveconnect. That won’t work on anything below android 4.3.
It then gave me a search string to type in, and again, I came up empty. After 3 hours of trying to find the software, I wrote to sony support which redirected me to their web site, and asked "Have you updated the firmware on your xperia phone". Long story shorty, I called this morning, and they no longer have liveware available. Support is being handled by xperia support.
All that said, If you do not have android 4.3+ on your phone it will not work, at all. Without the software it will not even tell time, useless. You will not find this out either under the product description, or on Sony’s web site, but you will if you call sony mobile support(the sony web site, sony support has never heard of the product:p none of the smart watches are listed on their site.