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