【7-Inch 9K Mono LCD】Equipped with a 7-inch 9K mono LCD offering an impressive 8520 × 4320 resolution and 18µm XY resolution, ELEGOO Mars 4 Ultra resin 3d printer allows you to print incredible complex models with crisp details. The mono LCD is protected by a 9H hardness tempered glass, ensuring it withstands daily wear and tear while maintaining optimal performance. 【Powerful Linux OS】ELEGOO Mars 4 Ultra resin printer built-in 4G RAM and no more delay loading files, the Linux operating system ensures faster & smooth operation and efficient resource management. 【Wi-Fi Connection】Effortlessly transfer files via the built-in Wi-Fi connectivity, ELEGOO Mars 4 Ultra 3d resin printer supports both 2.4G and 5G networks with a transfer speed of 6-10Mbps, eliminating the need for cumbersome cables. 【Effortless Leveling】The 4-point leveling system makes setup a breeze, and after one leveling, no need to repeat leveling, ensuring perfect prints every time. The laser-carved surface on the build plate offers improved adhesion, reducing the risk of print failures. Brand new ACF release liner film with less release tension for a high printing success rate even at a faster printing speed. 【User-Friendly Touch Screen】Navigate easily with the 4-inch HD IPS touch screen with a resolution of 800*480 pixels and support for 12 languages, making operation a breeze for users of all skill levels.   Specification BUILD VOLUME 153.36 × 77.76 × 165 mm PRINTING SPEED MAX 150 mm/h LAYER THICKNESS 0.01-0.2 mm XY RESOLUTION 18 μm (8520 × 4320) Z-AXIS ACCURACY 0.02 mm PRINTING TECHNOLOGY MSLA LIGHT SOURCE COB light source Fresnel collimating lens LCD SCREEN SIZE 7-inch 9K Mono LCD LCD SCREEN PROTECTOR 9H hardness tempered glass CONNECTION METHOD Wi-Fi, USB SYSTEM EL3D-4.0 SLICING SOFTWARE Chitubox & Voxeldance Tango & Autodesk Fusion