1. Start button.
Briefly press it to enter the menu, go back from the screen you are on or to pause/resume the sport you are doing.
Press and hold the button for two seconds to turn off the watch.
2. Charging connector.
Bring the end of the magnetised charging cable towards to this connector so that it connects to the watch. Plug the USB end into a USB charging port to charge your device.
3. Cardio sensor.
This sensor must be placed close to your wrist in order to carry out the measurement of your pulse.