The common 90s device used for relatively seamless lightweight wireless communication. Almost all of these aren't EOP capable, and the ones that are, lack in useful technical information. At the very least, one can assume the OS on the “EOP capable” ones is custom.

It has a complex OS compared to other devices at that time

Whatever this thing’s OS runs off, it’s quite advanced for a pager, practically functioning as a PDA alongside it’s normal paging functionality. Since it’s from 2001, one can assume it’s a very “deluxe” pager, coinciding with the phase out of the general public using them.

https://www.youtube.com/watch?v=ETRjGa06q4U