Official Xiaomi web site states that my Mi Band 5 can monitor sleep 24/7, it does not do that. Only night hours are monitored. Also, swimming is not synced with Google Fit app. EDIT: Now with Mi->Zepp name changing, one has to use multiple apps from the same manufacturer. Instead of locking people into your ecosystem, you're pushing them off of it. I'd prefer all my fitness related devices to work properly on one app.... My next band & scale won't be Xiaomi. Probably any Xiaomi product.