First and foremost, they simply worked. Pop your Palm in the bundled cradle, press the button, and your calendar, contacts and other information were in sync with your desktop, and you had a complete backup.
Secondly, the Palm really was small enough to slip in the pocket. The Psion Series 5, which came along in 1997, was a brick in comparison, though the fact it had a keyboard was sufficient to convince many of its merits. Personally, I found the Palm’s weird, shorthand notation for text entry to be easy to learn and extremely fast.Details