How do I charge my Amazfit GTR?

1) Take out the charging base, match the copper cylinder heads with the stainless steel touch points of the watch, and press it to ensure that they match well enough and there are no obvious gaps:

2) Connect the USB connector on the other end of the charging base to a mobile phone charger with a voltage of DC 5.0 V and an output current above 500 mA to charge your watch (A brand mobile phone charger is recommended), or you may connect the base to your PC for charging.