Before its first use the Smart Activity Tracker AM 1700/1703/1704 has to be charged for approximately 45 minutes via USB (e.g. USB slot of your computer/laptop). NOTE: Please mind the USB contacts on the tracking device! After charging, press on the display till the tracker's activation is confirmed by a soft vibration. A welcome-screen will be shown shortly, followed by the actual main screen of the tracker (where you can see the time etc.). Your Smart Activity Tracker is now ready for use.