AKA: DIGITAL DIARY SF-3900ER 128KB, BACKLIT DISPLAY, Product number (P/N): SF3900ER (SF-3900ER),
Keywords/Tags: SF3900ER (SF-3900ER) | DIGITAL DIARY | BACKLIT DISPLAY
Date of intro: ~jun-1999, Origin: China (List),
Power: 6V: (CR2032 x2),
Display: Type = Display (LCD) (List), Digits = 13: (x4),
Number of keys: 62, #Key-Black: 14, #Key-Grey: 48,
Classification: / Pocket / Data,
Featuring: RAM: k128,
Serie-members: CASIO: SF3700A (); CASIO: SF3700ER (); CASIO: SF3900A (); CASIO: SF3900ER (),
Collector value: 6/10,