To set the date with your 44340 microscope:
1. Press the menu button. You will see a pop-up menu with the entries mode, size, effect, date label, etc.
2. Use the up-down scroll or arrow keys to go down to the date label setting. Press OK.
3. Now a submenu will pop up to the right showing set, yes, and none. Choose set. Press OK again.
Now you are in the actual date screen. Use the up and down arrows to change the numeric value in a given field. The active field is indicated by a yellow arrow. Jump between fields by using the right and left arrow keys. Press OK to save the values and return to the main screen.