The Pro Display XDR contains a 6016 × 3384 6K color-calibrated panel, and its rear cover contains a similar lattice pattern to the third-generation Mac Pro. To improve its contrast ratio and HDR capabilities, it uses blue-colored LEDs for its backlight instead of white, at a higher refresh rate than the display itself, and contains a system of "custom lenses and reflectors". The aforementioned lattice serves as a heatsink: Apple stated that this design gave the display sufficient thermal management to operate "indefinitely" at 1000 nits of brightness across the entire screen, and up to 1600 nits in an environment cooler than 25 °C (77 °F).