Polar has made plenty of GPS exercise watches, an activity tracker, and even a GPS watch-slash-activity tracker, but this is the first time the company has made a wearable device that looks good and won't break the bank. At $200, we could actually see the Polar M400 ending up on some wrists.
Mio, which was one of the first companies to make a watch that could accurately measure your heart rate without an additional chest strap, has decided to downsize. They've taken the brains of the Mio Alpha, then they shrunk it and got rid of its face. What we've got left is a pulse reading wristband called the Mio…
Chest strap heart rate monitors are uncomfortable and annoying. HRM watches, like the MIO Alpha, have a lot of potential, but they still lose contact frequently. Valencell is going in a different direction, building a heart rate sensor into something most of us are already wearing: our headphones.
There are a million reasons to want to know your heart rate while working out. Maybe you're trying to stay in a certain range for fat-loss. Maybe you want metrics on how you're progressing. Maybe you just need to make sure your heart isn't about to explode.