Sharp EL-6810 Electronic Organizer. The organizer comes with complete printed instructions. Instructions show memory of 66838 bytes. You can view the amount of memory storage left at any time. This organizer requires a three volt CR2032 battery. The organizer is functional but the battery in it needs to be replaced. This is a fun low tech device that can store telephone numbers addresses email information it has a clock and a place to put your schedule other functions are available. The information is fully searchable