display always on?

I know this is probably a dumb question, but I can't seem to find an answer. I just ordered a ZW2 from amazon and was wondering, is there a way to keep the display always on? I know you can turn ambient display on and off, but it still looks like it goes to a low power mode, I was hoping to keep it in full display mode all the time. And if this is possible, how much of a battery drain would I be looking at?

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