Auto Leveling and Completed Mainboard Box --- X5SA adopts unique automatic leveling system, it can help you to make a more accurate position. It is easy to adjust the platform, so you can avoid the leveling trouble. Saving installation wiring time, the metal mainboard box make you feel more safety, thus you can use the machine without any worries. Furthermore, this design will help you to avoid installation error. Print sze:330*330*400mm/ 13*13*15.8inch. New Pinboard Design------Say goodbye to complicated and chaotic electricity line Filament Sensor------When there is no filament detected, a beeping alarm will be issued. After replacing the filament, click on the print you can continue printing. save a lot of time and trouble Cube Full Metal Square------The square structure makes the printer very fixed, and the metal material strengthens the stability, making the printing process more stable and smooth. After sale------ TRONXY will provide lifetimeTechnical support,will give you a satisfactory answer.Meanwhile TRONXY will strict testing for key components before delivery and life-time technical supports.