Extremely Rare and an Exceptional Piece of Technology by RIM whose name is forever marked in History all due to this device,

The Interactive Pager models 800 & 900 were the first handheld communications device designed and built by Research in Motion Limited. now Blackberry.  The pager was the forerunner of RIM's successful line of BlackBerry smartphones.

the Inter@ctive was a data-only device (no voice support) that run on the Ericsson's Mobitex and DataTAC networks in North America. The device featured a scroll wheel, a small QWERTY-style keyboard, and an LCD display for easier messaging as well as for entry and organization of data. It was provided with enough storage space for saving hundreds of names, e-mail addresses, fax numbers, incoming and outgoing messages in its calendar, address book, and task manager...