Meet the Microsoft Band: a health-tracking wearable that syncs with your iOS/Android/Windows-Phone devices. The device offers 24-hour heart rate monitoring. It can track your runs, steps, and calories burned. Unlike a few other smart wearables we have seen, this one also serves as a UV monitor. You are provided with guided workouts. It uses built-in GPS to measure the distance you have run. The device also serves as a sleep tracker.
Microsoft Band offers Microsoft Health integration. It is Cortana friendly. Sets you back under $200.