Ideal for retail or office use, the B31 3" Portable Thermal Label Printer from NIIMBOT requires no ink to print labels. It features a print resolution of 203 dpi that can be thermally printed on a width of 3". Connect a device via Bluetooth or through USB-C to conveniently print labels. A max printing speed of 80mm/s means you can quickly and easily print labels right when you need them. Charge the 1500mAh battery via the USB-C charging port so you can take this label printer on the go.