SpecificationsPrinter Type and Printer Consumables : This is Thermal Printer, you don't need any ink or toner, only need to use Thermal paperLanguages & SDK: It is available for many many languages, but the Default languages are only English and Chinese, if you want to change it to other languages or need the SDK, please kindly and leave us your email address, we will send you the 'setting tools' by email. Thanks- For android, please download the APP in the APP store. CaysnPrinter (demo app) :- For iOS, please download the demo POSPRINTER app first, then search the printer from the app. directly.- Driver: please download it from our website(we won't send CD since 23rd, Sept. 2021) or for sending it by email.- Print method: thermal line printing- Bluetooth compatible version: 4.0- Interface: power jack, mini USB- Print speed: 50 - 89.9mm/s- Dot per line: 384 dots per line- Paper thickness: 0.05 - 0.10mm- Paper width: 57 + / - 0.5mm- Print width: 48 + / - 0.5mm- Rolling paper diameter: 25mm- Life cycle time: 50km ( printing density under 12.5 percent ) / 100 million pulses- Barcode type: UPC - A / E, EAN - 13 / 8, CODE39 / 93 / 128, TIF, CODABAR; 2D: QR code, PDF417- Working temperature: -10 - 50 Deg.C- Internal characters: ASCII CH ( 8 x 16, 9 x 17, 9 x 24, 12 x 24 ); GB18030 ( 16 x 16, 24 x 24 )- Printing command: ESC / POS compatible with order sets- Paper feeding: easy paper loading- Black mark test: support- Battery: 1500mAh lithium-ion battery ( included ) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.