this is a used very good condition ender 3 s1, it is running upgraded firmware making it extra reliable, fast and customizable, it comes with two build plates, a dual sized PEI and a PC/Reflective steel (for laser engraving). It contains the laser engraving module with most original tools. Some 3d printed mods: cable chain for cleaner look and less clipping on things, second filament holder in case you want to quickly switch between filaments, top mounted tool holder to hold the scraper and cutter, snapping leveling gears in order to retain the leveling for longer and a direct drive extrruder visualizer to show the movements of the gears in the extruder module. All parts of 3d printer fully working and some filament included for test run. Benchys printed shown in picture. Self auto leveling fully working but recommended to manually level once in a while. the printer comes with the full 1.6W lazer engraving module kit as en extention in the original box. the printer is fully packaged in the original box with some extra boxes for the extentions. the print volume is 220x220x270mm which can fit most prints even of large size. the direct drive extruder allows for most filaments to be used even TPU which is a flexable filament that doesnt work in bowden driven systems. this printer has only been used for about a month and little to no external damage is shows, everything shows is printed on this printer including the benchys, this printer prints great and i usually print at 110mm/s but advertised speed claim 160mm/s.