Any programmable ones with an RTC can be programmed to Mine is a Casio CG50 and this tool can do it: https://github.com/gbl08ma/utilities https://github.com/gb

Any programmable ones with an RTC can be programmed to Mine is a Casio CG50 and this tool can do it: https://github.com/gbl08ma/utilities https://github.com/gbl08ma/utilities