An invigorating playlist can be a runner's best friend, but for some, the Linkin Park jams aren't worth the discomfort of strapping a phone to your arm. That's why fitness-watch makers are adding ...

So small, comfortable, and unobtrusive for a high-tech fitness wearable. Gorgeous retro styling. Customizable watch face and straps. Accumulates an amazing amount of data. Makes said data ...