While you wait for answers, we may have found some information which could help you.
Click here for Change Casio Watchcasio prt 30 (1405) battery change?
Casio TS-1200 Thermometer day of month format?
Casio TS-1200 watch?
How do you fix a frozen digital watch?
how can i shorten a casio metal watch band?
How can I fix my casio g3011?