As mentioned before, the Samsung Gear range was designed for fitness, and so its earbuds had a health tool: they could track a walk or run, and provide you with real-time data on your activity. For example, when running, a regular notification could let you know your duration, distance, heart rate, pace, or calories burned. You could also choose how regularly the guidance would be provided, either by distance or time. I'm sure it wouldn't exactly provide you with running watch levels of data; as far as I can tell, there's no built-in GPS, or even connected GPS if you're not running with your p