: Includes essential tools like a Calendar , Calculator , World Clock with alarm, Tasks (To-do list), Memos , and Contacts .
: Contains a built-in camera application for photos and video capture, a picture and video viewer that can play slide shows set to music, and a dedicated MP3 player . Treo 650 Software
The Treo 650 software is based on , which integrates standard PDA productivity tools with advanced mobile communication. A defining feature of this version was its support for a wide library of third-party applications, ranging from games to specialized business utilities . Core Software Applications : Includes essential tools like a Calendar ,
: Users can check their calendar or lookup contacts directly while on a phone call. World Clock with alarm