- Forum: General Discussion
It has some sensors like accelerometer, gyro and barometer so it can track your relative movement but it won't know where you are in the world and probably can't calculate overall distance accurately. If you don't plan to be looking at the watch regularly to check heart rate or timing, the iPhone on its own will do the job just fine. Without the iPhone nearby, the watch will be almost useless for fitness tracking. They can always add GPS before launch though.