Creality Official Ender 3 S1 PLUS Upgrade 3D Printer with CR Touch Auto-leveling Sprite Dual-Gear Extruder Double Z-axis Screw Core Features Build Volume Upgrade: 300*300*300 mm, print larger-size models, meet more printing needs. Hassle-free CR Touch Auto-leveling: Quick leveling with automatic height compensation for 16 points on the heatbed. "Sprite" Full-metal, Dual-gear Direct Extruder: Good Filament Compatibility, brand new direct extruder, lightweight and powerful, ensures smooth feeding. 4.3-inch Touch Screen, Click to Control: User-friendly UI supports 9 languages. Automatic dimming out in 3 minutes for energy saving. Synchronized Dual Z-axes, High Precision Printing: Dual Z-axes lead screws and dual motors for stable movement and quality printing. Quick Assembly, easy to handle: 96% pre-installed, 6-step assembly, easy to use.