https://blog.wongcw.com/2019/08/01/fitbit%e7%9a%84%e5%85%a8%e5%8a%9f%e8%83%bd%e6%99%ba%e8%83%bd%e6%89%8b%e9%8c%b6%e7%94%a2%e5%93%81versa-2%e7%8f%be%e8%ba%ab%e7%9b%b4%e9%9d%a2apple-watch/