There is no widely recognized product or manual currently identified as "zy8068" in major fitness or electronics databases for 2021.
If you cannot find the online, email the seller or manufacturer with your device’s serial number. Ask for “Revision 2.1, dated 2021-03 or later.” Most legitimate vendors will send you the PDF within 48 hours. zy8068 manual pdf 2021
Many users make the mistake of downloading a generic ZY8068 manual from 2018 or 2019. However, the contains critical differences: There is no widely recognized product or manual