The 305’s digitally coded heart-rate monitor–which is worn as a chest strap–sends heart-rate data to the device so you can see whether you’re training too hard or not hard enough. Alerts for pace, distance, time, and heart rate are also available. Additionally, the unit tracks speed, distance, pace, and calories burned. Meanwhile, a course feature lets you race against previous runs in order to improve your time or just compare heart rate and pace data at every point of the way.
More in this link. /rhyhttp://www.amazon.com/Garmin-Forerunner-…
The 305’s digitally coded heart-rate monitor–which is worn as a chest strap–sends heart-rate data to the device so you can see whether you’re training too hard or not hard enough. Alerts for pace, distance, time, and heart rate are also available. Additionally, the unit tracks speed, distance, pace, and calories burned. Meanwhile, a course feature lets you race against previous runs in order to improve your time or just compare heart rate and pace data at every point of the way.
More in this link. /rhyhttp://www.amazon.com/Garmin-Forerunner-…