剛好找到外國一篇文章 就是根據2018年 TicWatch Pro上市的時候的評論 出處:https://www.theverge.com/circuitbreaker/2018/5/24/17386374/ticwatch-pro-second-display-mobvoi-wear-os 裡面有這麼一段話: The TicWatch Pro isn’t actually the first smartwatch to experiment with a dual display setup. Casio tried this with its Smart Outdoor Watch two years ago, but it took a different approach — the display was there more as an option, so you could use it as a hiking watch one day and a smartwatch the next; you couldn’t run both at once and flip between them.