The Mi S2 is a smartphone, while the VivoWatch 2 is a smartwatch. The two differ in function and use. The Mi S2 has a more powerful processor and a larger screen, which is suitable for daily use and multimedia entertainment. VivoWatch 2 focuses on health and exercise tracking, with heart rate monitoring, sleep monitoring and other functions. So which one is better depends on your needs.
If you're more focused on mobile features and entertainment experiences, then the Mi S2 may be more for you.
If you're more focused on fitness and activity tracking, then the VivoWatch 2 might be for you.
Xiaomi watchs2 good.
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Xiaomi watchs2 built-in 12nm advanced process chip, is still equipped with 470mAh battery, and uses magnetic charging design, battery life of up to 14 days, but also supports wireless backcharging, Xiaomi Watch S1 Pro also supports Bluetooth call, dual-band GNSS positioning, and equipped with 117 sports modes. Supports sleep, heart rate, blood oxygen detection, and NFC bus pass