https://blog.wongcw.com/2021/12/07/%e8%b0%b7%e6%ad%8cpixel-watch%e6%99%ba%e6%85%a7%e6%89%8b%e9%8c%b6%e7%87%9f%e9%8a%b7%e5%9c%96%e7%89%87%e6%9b%9d%e5%85%89/