Filament detection: if the filament spool runs out during printing, the machine automatically pauses for you to load in a fresh spool, very useful for big volume object printing. Please let me know if you have any additional questions. The item "BIBO 3D Printer Dual Extruder Sturdy Frame WiFi Touch Screen Cut Printing Time" is in sale since Tuesday, June 22, 2021. This item is in the category "Computers/Tablets & Networking\3D Printers & Supplies\3D Printers". The seller is "prime-retail-deals" and is located in Rio Linda, California.This item can be shipped to United States.