Feature: 1. 58mm portable thermal receipt printer, strong compatibility, support BT function or USB cable connection, compatible with for Win 7/10, for Android, for iOS system. Please download relative APP (For Android system, support for caysnprinter Loyverse, for BT Print, for Kyte, for RawBT; For iOS system, support for POS printer, for Kyte, for Kahero POS, for Utak.) or driver on your devices. Compatible ESC/POS print commands. 2. 203dpi resolution, support maximum 40mm roll diameter, reduce paper change times. Easy to load paper. 57±0.5mm paper width, 48mm effective print width, 80mm/s maximum print speed, high efficiency and clear printing. 3. Direct thermal printing, no ink cartridge, environmental conservation and money saving. Compared with dot printer, it is smaller and quieter. 4. 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. 5. The built in 2000mAh rechargeable li battery has long standby time and can print continuously for 1 hour with one full charging. Wireless connection, print anytime and anywhere. Specification: Specification: Model: JK-5803P Size: 8.2 x 8.7 x 4.2cm Weight: 150x124x66mm/5.9x4.8x2.6in Printing Method: Line Thermal Printing Width: 48mm Resolution: （8dots/mm，203dpi） Point Per Line: 384 dots/Line Printing Speed: 50-80mm/Second Paper Width: 57±0.5mm Paper Roll Dia.: ≤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: 2000mAh Li Battery Charging Time: About 4hrs Discharging Time: 1hr Package List: 1 x Thermal Printer 1 x User Manual 1 x USB Cable 1 x Thermal Paper Roll Note: Suitable for smartphone for APP-Loyverse (Retail/Clothing), for iREAP(Retail/Inventory), for CasierStock(Shopping/Inventory Management), for Kyte(Mobile Sales), etc. Please make sure your cellphone is compatible with these softwares.