Brigmton BWATCH-G1 Manual De Instrucciones página 15

CONFIGURE THE DATE: If the bluetooth is on and the watch is connected to
the application with your phone, the date will be synchronized from the
phone. If the bluetooth is off and you want to adjust the date, follow the
steps below:
1) Press S2 to show the date.
2) Short press S4 to select year, month, day.
3) Press S3 to adjust each of the parameters.
4) Press S2 to confirm the configuration, at the end.