WRIST-BASED HEART RATE - Run without a strap - the Forerunner 225 uses a built-in sensor to measure heart rate at the wrist
GRAPHIC INTERFACE - A colorful gauge shows your zone at a glance: warm-up (gray), easy (blue), aerobic (green), threshold (orange) or maximum (red).
GPS - GPS-enabled, Forerunner 225 provides accurate distance and pace data. You can also view your run on a map when you upload to Garmin Connect.
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