Description： Brand：Phomemo Connectivity Technology：Bluetooth, USB Printing Technology：Thermal Special Feature：Portable ;Duplex Printing Model Name：P831 Printer Output：Monochrome Max Printspeed Monochrome：4.2 ppm Item Weight：795 Grams Product Dimensions：309*63.5*41.5mm print resolution:300DPI Battery capacity:2000mah Print Speed:10-15mm/s Support print size:A4/Letter .
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