All I got from the demonstration video on their website was to fill the water to the mark. So, like my rice cooker has markings inside the area you put water in that tell me "minimum" & "maximum" water fill levels. Does the Egg Genie have anything like that?
My mom had a version of this back in the late 70's that she used at least for 10 years. It wasn't called Egg Genie but did the exact same thing. I have always wanted one just because you could pop the eggs in & forget about them while doing other cooking.
I also found a phone number to contact the company with any questions. Maybe they'd be able to give you the water measurement or maybe you can purchase or download a manual. Good luck & let us know how you like it!
*Tink
If you have any questions please call customer service at:
(203)567-1139
Mon - Fri: 8:30am - 8:00pm EST
ETA: Mom used hers every morning for making dad a soft boiled egg as well as hard boiled whenever needed for appys. I know it wouldn't last as long for me now because we have hard water & it just destroys any appliance that uses water in it; coffee maker, steamers, etc.