Features: Mini BT thermal receipt printer, 58mm paper width, 48mm print width, 50-80mm/s print speed, 203dpi resolution. Support BT and USB cable connection, compatible with iOS, Android, Windows system. Please download relative APP or driver on your devices. Adopting thermal print head, no need ink cartridges or ribbons, clear printing, low operation cost, thermal paper is easy to buy. Portable and lightweight, easy to carry, it doesn’t need much space. Specifications: Color: Black Material: Plastic Print Method: Line Thermal Printer Print Paper Width: 57mm±0.5mm Printing Width: 48mm Resolution: 8dots/mm(203dpi) Print Density: 384 dot/line Print Speed: 50-80mm/s Roll Diameter: 40mm(max.) Printing Characters: ANK: 8×16,9×17,9×24,12×24 GBK: 24×24 Characters/Line: ANK: 48,42,32 GBK:24,16 Life Cycle Time: 50km(printing density under 12.5%)/100 million pulses Barcode Type: 1D: PC-A,UPC-E,EAN-13,EAN-8,CODE39,CODE93,CODE128,CODABAR,ITF25 2D: QR CODE,PDF417 Interface: BT/USB Paper Feeding: Easy Paper Loading Paper Cut: By Hands Print Command: Compatible with ESC/POS Charging Time: About 4 hours Operating System: Compatible with Android, iOS, Windows Working Temperature: -10 °C~50°C Working Humidity: 20%~85% Storage Temperature: 15°C~20°C Storage Humidity: 45%~75% Item Size: 7.8 * 10.5 * 4.7cm / 3.1 * 4.1 * 1.9in Item Weight: 221g / 7.8oz Package Size: 15.3 * 12.6 * 6.8cm / 6.0 * 5.0 * 2.7in Package Weight: 350g / 12.3oz Packing List: 1 * Printer 1 * USB Cable 1 * Thermal Paper Roll 1 * User Manual(English)