Precision:1/3000 Storage Capacity: 10,000 PLUs Display: Double sides displays with the pole -LCD display Keyboard: 103keys(63×3=189 PLUs Hotkeys, 40 Function keys) Printing type: Thermal Printing, Printing Speed: >50mm/s, Paper Width: 57mm, Printing Width: 50mm,Recommended Label Size: 60×40mm 40x30mm Paper Roll Outer Diameter: 80mm(Max) Paper Roll Internal Diameter:42mm (Min) Ports(Standard):AC100-120V or AC200-240V 50/60Hz, 0.5A Battery Inside :About 10Kg Work Environment :Temperature: -20℃~50℃;Humidity:10%~95% RH Storage Environment :Temperature: -20℃~50℃; Humidity:10%~95% RH