Sapphire wear-resistant watch mirror is an external protective window of a watch, made of single crystal sapphire material and a flat polished product based on single crystal sapphire processing. It has excellent pressure resistance and corrosion resistance, and uses the pressure resistance, wear resistance, and high temperature resistance of sapphire to protect the internal components of the watch. It can effectively resist the impact and scratches of various hard and high-speed moving objects, and effectively maintain the clarity and stability of the window.