Xiaomi Smart Glasses has a display chip measuring just 2.4mm x 2.02mm. Under a microscope, the display is roughly the size of a grain of rice, with individual pixels sized at 4μm—enabling the display to be fitted perfectly within the frame of the glasses. To allow sufficient light to pass through complicated optical structures before reaching the eye even in harsh direct sunlight, we opted for an ultra-efficient monochrome display solution, which is capable of reaching a peak brightness of 2 million nits.