VEVOR Thermal Binding Machine, 500 Sheets Capacity Book Binding Machine, Thermal Book Binder 50mm Binding Thickness A3(Short Edge)/A4/A5 Document, with Infrared Optical DetectionEasy BindingEfficient HeatingHigh Capacity Binding MachineSafe and EfficientWide ApplicationDual Buzzer AlertMax Binding Length: 320mm/12.6 inch,Control Mode: Mechanical Switch,Heating Time: 3 min,Preheat Time: 3 min,Display Mode: LED Indicator,Product Dimensions: 380x235x135mm/14.96x9.25x5.31 inch,Safety Protection: Automatic Power-Off,Compatible Paper Sizes: A3 (Short Edge)/A4/A5,Binding Capacity: 500 Sheets,Item Model Number: SK5000,Product Weight: 2.5kg/5.51 lbs,Heating Method: PTC Ceramic Heating,Heating Temperature: 140℃ ± 10℃,Max Binding Thickness: 50mm/1.97 inch,Settings: Three Time Adjustment Settings