This unit, which can occasionally be purchased on eBay.com, also has a three-line display (unlike some inexpensive PDAs and organizers with only 1-2 lines), quick reference instructions printed on the inside of the protective lid, and several built-in applications. It can store notes/memos, keep telephone numbers, show the current time/date, and carry out mathematical calculations, among other functions. It uses a small, coin-style battery, and is sometimes sold with an instruction booklet.

Overall, the Polaroid Electronic Organizer looks to be a good, inexpensive choice if you don't mind the relatively low memory capacity.