Features: 58mm portable thermal receipt printer, strong compatibility, support BT function or USB cable connection, compatible with Windows 7/10, Android, iOS system. Please download relative APP (For Android system, supportcaysnprinter Loyverse, BT Print, Kyte, RawBT; For iOS system, supportPOS-printer, Kyte, Kahero POS, Utak.)or driver on your devices. Compatible ESC/POS print commands. 203dpi resolution, support max. 40mm roll diameter, reduce paper change times. Easy to load paper. 570.5mm paper width, 48mm effective print width, 80mm/s max.print speed, high efficiency and clear printing. Direct thermal printing, no ink cartridge, environmental protection and money saving. Compared with dot matrix printer, it is smaller and quieter. The built-in 2600mAh rechargeable lithium battery has long standby time and can print continuously for 1 hour with one full charge. Wireless connection, print anytime and anywhere. Portable and lightweight, easy to carry, it doesn't need much space. Widely used in bill printing, post receipt printing, restaurant ordering information printing, shop receipt printing and so on. Specification: Model: JK-5803P Color: White, Black (Optional) Size: 8.2 x 8.7 x 4.2cm Weight: 150x124x66mm/5.9x4.8x2.6in Printing Method: Line Thermal Printing Width: 48mm Resolution: 8dots/mm203dpi Point Per Line: 384 dots/Line Printing Speed: 50-80mm/Second Paper Width: 57 Add or subtract 0.5mm Paper Roll Dia.: less than or equal 40mm Paper Feed Method: Easy feed (Clameshell feed) Commands: ESC/POS Interface Type: USB, BT2.0+4.0 Character: Chinese character (support GBK), International character set, ascii, Bar code, CODE39, EAN13, CODABAR, CODE93, ITF, CODE128, QR code Graphics Paper Loading Method: Easy Paper Loading Battery: 2600mAh Lithium Battery Charging Time: About 4hrs Discharging Time: 1hr Package Size: 15 x 12.4 x 6.6cm/5.9 x 4.8 x 2.6in Package Weight: 278g/9.8oz Note: Suitable for smartphone APP-Loyverse (Retail/Clothing), iREAP(Retail/Inventory), CasierStock(Shopping/Inventory Management), Kyte(Mobile Sales), etc. Please make sure your cellphone is compatible with these softwares. Packing List: 1 x Thermal Printer 1 x User Manual 1 x USB Cable 1 x Thermal Paper Roll