Description Model: MTP-II Dimension:79*110*45mm Print method: Line thermal printer Paper width: 57mm print width: 48mm Weight ( g): 235 (not including the paper roll) Max diameter of paper roll: 40mm Dot per lie: 384 dots/line internal characters: ASCII CH(8×16,9×17,9×24,12×24); GB18030(16×16,24×24) Print speed: 50~80mm/s Life cycle time: 50km(printing density under 12.5%)/100 million pulses text and graphic Support: English, figure, symbol, Chinese, graph, curve, icon pre-stored, barcode(CODE39EAN13EAN8 CODABARCODE128CODE93ITF) QR code ,PDF417 Dot pitch (resolution): 203DPI/8 dots/mm interface: bluetooth,Mini USB Power: 1500mAh 7.4V rechargeable Lithium battery Recharge adapter: Stand by recharging / AC adapter Self-check: Without paper / cover open Black mark test: Supported Paper feeding: Easy paper loading commands: ESC/POS compatible with order sets Paper cut: By hands operate setting: Temperature  -10°C~50°C ; Humidity 20%~85% Recharge Setting: Temperature 5°C~40°C; Humidity 20%~85% Storage Setting: Temperature -20°C~70°C ; Humidity 5%~95% Standard accessories: Long-term preservable paper,AC adapter,li-ion battery,USB cable Optional accessories: Serial interface cable/leather coat/CD