Features: Adopt thermal printing technology, no ink cartridge, convenient and cost saving. 200dpi high resolution printing head, clear print, stable performance. Small and compact size, easy to carry. Open the cover to install the paper roll, connect with your devices through BT and start to use it. Built-in 1200mAh battery, long endurance time, can work for a long time. Wide application, it can be used to print notes, errors, timetable, memo, articles, pictures, receipts, labels, etc. Specification: Name: Portable printer Color: Green/Pink(optional) Printing method: Thermal printing Connection mode: BT4.0 Definition: 200dpi Printing paper size: 57*25mm Charging interface: 5V Micro USB Battery capacity: 1200mAh Item size: 8 * 8 * 3.8cm /3.15 * 3.15 * 1.5in Item weight: Approx. 151g /5.33oz Packing list: 1 * Printer 1 * Charging cable 1 * User manual 5 * Rolls of self-adhesive printing paper 6 * Rolls of thermal paper(1 roll has been installed in the printer) 3 * Rolls of color printing paper 5 * Pens