History
Your device stores up to 14 days of activity tracking and heart rate monitoring data, and up to seven timed activities. You can view your last seven timed activities on your device. You can synchronize your data to view unlimited activities, activity tracking data, and heart rate monitoring data on your Garmin Connect™ account (Using the Garmin Connect App) (Using Garmin Connect on Your Computer).
When the device memory is full, your oldest data is overwritten.