There's a lot of interest on smart watches with September releases imminent.
I've had the pebble which had great battery life, was compatible with iOS and android and waterproof. Also a Samsung gear- nice materials but disappointing battery life, a daft cradle to recharge, not good for outdoor use and very limited by only working with Samsung devices!!! Also, I had a Sony smart watch 2 which I preferred over the Gear (not as premium feeling but a lot more versatile and practical). However, none of the above has led to me using a smart watch beyond trying them for a few weeks. I don't currently wear a watch and to be useful I'd need any smart watch to do things a lot more conveniently than I can with an easily accessible smartphone (including 3 button hands free set). With a larger device/phablet, a smart watch could be a useful accessory (as long as it doesn't need it's own SIM card!). The current iPhone 5s with touchid is small, light, easy to access, has a built in pedometer, and easy access to audio and camera. I can see less reason for using a smart watch with an iPhone than with a phablet (so will be interesting to see the iPhone 5.5). Based on what I've seen of Cortana (compared to google and Apple's voice control) a Microsoft watch that was compatible with WP, Android and iOS would be interesting. On the android front Mororola's 360 and the new LG watch look interesting, stylish and practical than some of the previous android smart watches.