This document is an operation manual for ELECTRONIC ORGANIZER EL-6850 EL-6890 EL-6890S. The manual includes basic operations of using the electronic organizer, such as first-time usage, troubleshooting for abnormal conditions, auto power off function, backlight, LCD contrast adjustment, etc. It also provides instructions for using various functional modes, such as clock mode, telephone/email mode, WWW mode, calendar mode, memo mode, anniversary mode, etc.