Specification:Model: L81Product Color: Black, White (Optional)Print Resolution: 304DPIPrinting mode: Row heat sensitivePrinting speed: 10 mm/s (max)Input power: 5V 2AMachine size: 290 x 90 x 60 mmWeight: 756gPaper type: Thermal PaperPaper Width: 56mm/77mm/107mm/210mm/216mm(2in/3in/4in/8in/8.5in) , US LetterEffective Printing Width: 211.5mm (paper width: 216mm), 208mm (paper width:210mm)Instruction format: YPLGraphic printing: SupportCommunication interface: USB / BT2.0 & BT4.0System: Windows, Mac OS, Android, iOSBattery: 7.4V, 2600mAhCharging Time: 3-4hrsDischarging Time: about 2.5hrsOperating temperature (℃): 0℃ ~ +40℃Working humidity: 30% ~ 85% RH (no condensation)Storage temperature (℃): -20℃ ~ +60℃Storage humidity: 10% ~ 90% RH (no condensation)Package Size: 31x10x12.2cm/12.2x4x4.8inPackage Weight: 1034g/36.5ozNote:1. Please download the driver via http://www.luckjingle.com/driverDetail?id=42. This thermal printer can only be used on thermal paper and cannot print on ordinary A4 paper; double-sided printing requires thermal coating on both sides.Packing List:1 x Thermal Printer1 x Thermal Paper Roll1 x Charging Cable