iHealth AM3 Guide De Démarrage Rapide page 8

Data Syncing
Your activity and sleep stats are sent to your mobile app
automatically when you open the app. Your Tracker can save up
to 14 days' worth of stats between syncing. Daily syncing is
recommended.
Activity Tracking
Your iHealth Wireless Activity and Sleep Tracker is always
tracking. View your steps, calories, and distance stats by pressing
the button on the tracker. Activity stats reset at midnight to zero.
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