How do I set the date and time on the LetraTag 100H / 100T?

Power on the LetraTag device and press Settings.

Using the up or down arrows on the Navigation key (the Navigation key is the circular key with the 4 arrows), select Set Date and press OK. Using the left or right arrows on the Navigation key, move the cursor over each setting (month, day, and year) and use the up or down arrow keys to increase or decrease the value. Press OK, the default time is displayed. Use the left or right arrows on the Navigation key to move the cursor over each setting (hours and minutes) and use the up or down arrow keys to increase or decrease the value. When finished, press OK.