In order to set the time on an Armitron WR330 watch, you need to take the following steps. 1)Press and hold the "MODE" button until the display begins to flash. 2) Press the "MODE" button again, and the seconds should begin flashing. Press "ADJ" to set them to zero. 3) Press the ""ST/STP" button to change what value (minutes, hour, month, day, day of the week) you want to set. 4) Press the "ADJ" button to change the value of each setting you want to save. 5) Press "MODE" to save the settings.