Wrist-Mounted-GPS.jpg The Garmin Forerunner 305 weighs just over 2.5 oz., and lets you know real-time information about speed, distance, pace, and heart rate. It has training assistant tools, various distance and time alerts, and bundled Training Center PC software, make this gadget an integral part of your workout.

The Forerunner 305’s SiRF GPS navigation chip means that even under tree cover and between tall buildings you’ll get accurate information about your location. The digitally coded heart-rate monitor is worn as a chest strap and sends heart-rate data to the device so you can see whether you’re training too hard or not hard enough.

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“Just when you thought Garmin had cornered the market on powerful, affordable, and effective wrist-mounted GPS devices, here comes the Forerunner 305. The release of this device is a major achievement from a design and technology perspective. This isn’t just marketing-speak; the Forerunner 305 is the most accurate, most reliable wrist-mounted performance and GPS tracking tool we’ve ever tested. Yes, it’s that good. While no device this compact can do everything (yet), the 305 pushes the boundaries of what is possible from something strapped around your wrist.”