512KB memory capacity
17 x 6 display
Backlit display
Telephone directory
Schedule
The SF6990 also features:

• Data communications with a PC Conversion
• Anniversary storage
• Memo
• To Do Home time / World time
• Calculation capacity (10 digit)
• Alarm
• Secret Multi-lingual messages (6 languages)
• Data exchange between two digital diary units (optionally available SB-63 cable)
• Power supply (main - CR2032 x 2)