The Xiaomi Mi Band 7 is up for sale in China, and it is likely a global variant of the fitness tracker will soon follow. Owners of the Mi Band 6 (aka Mi Smart Band 6) may wonder if an upgrade is worth the money, which will partially depend on how important a continuous blood oxygen measurement feature is to the wearer.
https://www.notebookcheck.net/Xiaomi-Mi-Band-7-vs-Mi-Band-6-A-larger-display-bigger-battery-and-continuous-blood-oxygen-monitoring-for-the-2022-model.622931.0.html