Just bought this type of watch and have the basic operations.
To set the time and date:
A. Press and hold MODE (Upper left button) until HOURS digits flash (you'll be in Alarm Mode). Press MODE again to enter TIME mode. SECONDS digits will flash.
B. Press ADJUST (bottom right button) to set SECONDS to zero.
C. Press START/STOP (upper right button) to select MINUTES
D. Press ADJUST to change.
E. Repeat to set Hours, Date, Month, and Day of the week. Go through 12 hours to set AM or PM
F. Press MODE when done.
G. To display DATE from TIME display, press START/STOP
H. With DATE displayed, press and hold START/STOP, then press ADJUST to change display between DATE-MONTH
I. With TIME displayed, press and hold ADJUST, then press MODE to switch between 12 and 24 hour format.