1 - How do you change the time on the Deggy Pen?

If you're using Deggy Control version 4.00 or above, then the time change is done automatically each time you download the pen. If you're using any other version of Deggy Control, you'll need to reprogram the wand to readjust the time according to your computer's clock.

2 - How do I know when it's time to replace the battery on the Deggy Pen?

When the battery is dead the red light (LED) will stay lit continuosly.

3 - What happens if a Deggy button gets wet?

Nothing. As a matter of fact, the Deggy Pen is able to read wet buttons normally.