There are dozens of synergistic possibilities that come to mind immediately when you consider the ability to pair a smart watch with a smart phone. For instance, instead of using a Bluetooth earpiece, you can go full Dick Tracy and do a facetime with your watch. Or if you lay your phone down somewhere and forget about it, rather than spend the next five minutes trying to find it, you can use your watch to ping your phone. Or have a proximity alert that goes off when your phone moves a certain distance from the watch. That would keep your phone from casually walking away from you in someone else's hands. Being able to casually see who is texting or calling, and pass it off as just checking the time. Very useful in a meeting where you don't want to look like you're bored to tears or completely distracted.