https://blog.wongcw.com/2021/09/03/45-%e6%af%ab%e7%b1%b3-apple-watch-s7-%e7%9a%84-1-9-%e8%8b%b1%e5%af%b8%e8%9e%a2%e5%b9%95%e6%9c%89%e5%a4%9a%e5%a4%a7%ef%bc%9f/