Do Casio products contain Lead or Mercury?

CASIO products comply with regulations on the content of specific chemical substances in each country as part of efforts to comply with product environmental laws and regulations.
We have established and operate the "Casio Green Procurement Standards" as a standard.

https://web.casio.co.jp/csr/env/greenproc/guideline_e.htm

Mercury and Lead are specified as banned substances, so they are not used.