Garmin Forerunner 305. The device is a GPS wristwatch that wirelessly... | Download Scientific Diagram
Garmin Forerunner 305 Waterproof Running GPS with Heart Rate Monitor (Discontinued by Manufacturer) : Amazon.ca: Sports & Outdoors
The Garmin Forerunner 305 GPS unit with heart rate monitor. You can keep tabs on how hard you're working, making sure to neither over or under exert yourself. (Photo by Walter Cruz/Dallas