Advanced thermal printing technology, no ink cartridge, convenient and cost saving. Built-in 1000mAh rechargeable batterys, working in low noise, the thermal printer does not need ink cartridge when using, low operation cost. 200dpi high resolution printing head, clear print and stable performance. Support multiple functions, it can print photos, labels, messages, lists, records, QR Code, web printing and so on. The APP offers a variety of fonts and themes to make your photos stylish. Record your life, print the scenery you see, record his or her sweet words, collect the exercises you have done wrong, fun and practical. Lightweight and compact size, easy to carry. Specifications: Material: ABS Color: Pink, Green(optional) Print Type: Thermal Printing Input: 5V,1A Resolution: 200dpi Connection: BT/USB Batterys: 3.7V, 1000mAh Colorful Paper Width: 57mm Roll Diameter: 25mm White Paper Width: 57mm Roll Diameter: 25mm Package Weight: 230g/8.11oz Packing List: 1*Printer Paper Roll (depends on your choice) 1*USB Cable