Garmin is more than a little late to heart-tracking watches (even TomTom had one last year), but it's making up for that today. The company's new Forerunner 225 running watch has a built-in, Mio-developed heart monitor that saves you from buying a chest strap just to find out whether or not you're pumping blood at an ideal rate. You'll also get some of the perks of Garmin's nicer wristwear, such as step counting, an accelerometer for tracking indoor runs and data sharing with your smartphone. If you're eager to prep for a marathon with Garmin's help, you can pick up the 225 sometime this quarter (no later than June) for $300.
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