https://blog.wongcw.com/2021/07/27/oppo-watch-2%e7%b3%bb%e5%88%97%e6%ad%a3%e5%bc%8f%e7%99%bc%e4%bd%88-%e6%99%ba%e6%85%a7%e7%ba%8c%e8%88%aa%e5%85%bc%e5%be%97%e7%9a%84%e8%b6%85%e8%83%bd%e4%bb%a3%e8%a1%a8/