Database / Casio / B640WB-1ANO IMAGE YETCasioB640WB-1ABrandCasioModelB640WB-1AModule No5691BatteryCR2016→ Track when you changed this battery — get reminded before it diesStrap Size18mm[ RELATED GUIDES ] How to change a watch battery · Battery codes explainedI own this watch — add it to my collection[ SIMILAR MODELS ]NO IMAGECasioDW-5600E-1VNO IMAGECasioDW-5600BB-1NO IMAGECasioF-91WM-9ANO IMAGECasioF-91WS-7