Bluetooth Printer: This is wireless bluetooth thermal printer, white and black printing, zero ink technology that there's no need for pricy toner or printing supplies. Print at a speed of 10mm/s. Multi-function: With this bluetooth printer, you can use it to record your journal or start the DIY craft. Can be used to print important materials. Text Recognition Technology: This pocket printer support for topic search, text recognition, and retrieval technology helps to take pictures and upload questions. Easy to Carry: Size: 8*3.5*11CM. Printing Paper: 57X30mm / 2.2 x 1.2in(Need to buy original printing paper for easy replacement). Battery Capacity: 1000 mAh.