I should keep this comment for when it transforms people's lives, but I'm not that interested. First of all it's not a watch, it's a wearable device that happens to display time, and give notifications. The real reason they are making it is to track biometrics. As an example of it saving someone's life: elderly person goes into cardiac arrest, the watch instantly sends alerts to family members so they can contact 911, or it sends alerts directly to emergency services. If it accurately tracks blood glucose non-invasively, it will literally be vital to diabetics, but not just them, any smart person trying to lose weight. Moreover it could save diabetics lives, if their blood sugar is getting too low, instantly vibrate, and alert them to raise it.