Features: 200dpi high resolution printing head and print at a speed of 10mm/s, clear print and stable performance. The APP offers a variety of fonts and themes to make your photos stylish. Built-in 1000mAh rechargeable batterys, working in low noise, the thermal printer does not need ink when using, low operation cost. 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. Material: ABS + PC Paper Type: Thermal Paper Connection: BT/USB Input: 5V, 2A Batterys: 3.7V, 1000mAh Paper Width: 57mm Roll Diameter: 30mm Resolution: 200DPI BT Version: 4.0 Package Size: 144" x 134" x 55"mm/5.67" x 5.28" x 2.17"in Package Weight: 250g/8.82oz Notes: 1. Download the app 'iprint' for iOS phones; Andriod users can search 'iprint' and download it in the store. 2. The app 'iprint' with English, French, Italian, Spanish, German, Greek, Russian, Chinese multi language support. Packing List: 1 x Printer 1 x Paper Roll 1 x USB Cable 1 x User Manual.