Fangrui Product Details 1. Qs-5803 Portable 58mm Bluetooth Pos Receipt Thermal Printer(grey) 2. Features 3. High Speed, Clear Printing. 4. Small Size, Light Weight, Wireless Design, Simple Connection, Easy Operation And Maintenance, Reliable Performance. 5. Built-in Rechargeable 1400mah Lithium-ion Battery, Long Standby Time. 6. Applications: 7. - The Mobile Police System. 8. - The Tobacco Distribution System. 9. - The Utility Meter Reading System. 10. - The Mobile Office Mobile Logistics Systems. 11. - The Portable Instrumentation. 12. - The Testing Equipment, Ancillary Equipment. 13. Parameters 14. Printing Method: Thermal Line Printing. 15. Printing Width: Paper Width 58mm, Effective Width 48mm. Print Density: 384 Dotline 16. P Print Line Width: 24 Characters Line 48 English Characters Line Or 36 Characters Line, 72 English Characters Line Or 12 English Characters Line, 24 Characters Line Or 8 Characters Line, 16 English Characters Line. 17. Chinese Character Encoding: Gbk. 18. Built-in Font: Ascii Font(12*24, 8*16), Gbk(24*24, 16*16)(32*32, 48*48). 19. Print Speed: 70mms. 20. Printer Core Life: 50km ( Print Density Or Less Than 100 Million Puiese). 21. Printable Content: English, Numbers, Various Symbols, Characters, Pictures And 1d2d Barcode Printing, Picture Printing, Multi Languages Printing. 22. Resolution: 8 Dots Mm, 203dpi 23. Data Communication Interface: Usb Rs232 Bluetooth. 24. Power Supply: Machine Charging 9v-1.5a. 25. Print Time: Continuous Printing 3-4 Hours. 26. Instruction Set: Esc Pos Compatible Instruction Set. 27. Cut Paper: Manually Tear. 28. Reminder Settings: Battery Reminder, Paper Alarm, Beep Sound. 29. Black Mark Detection: Yes, Can Be Printed With A Gap Of The Adhesive Thermal Paper. 30. Operating System: Android, Ios, Win9xwin Mewin2000winntwinxp, Win Vista, Win7, Win8, Linux.