: Includes essential tools like a Calendar , Calculator , World Clock with alarm, Tasks (To-do list), Memos , and Contacts .
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 Treo 650 Software
: Built-in support for wireless headsets, hands-free car kits, and wireless synchronization with compatible PCs. : Includes essential tools like a Calendar ,
: Users can check their calendar or lookup contacts directly while on a phone call. Core Software Applications : Built-in support for wireless
: 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 .