The CMP-20 mobile printer have WiFi, Bluetooth, USB, and Serial connectivity which provides compact and robust printing on the go. Great for applications in ticketing, retail, law enforcement, and courier. Part Details: Mobile Printer - CMP-20II - 203 dpi - IP42 - Li-Ion 1800 mAh Battery - 1.89'' print width - 3'' per second print speed - 1.88'' Max Media Outside Diameter - Dual USB and Serial Interface - ZPL II - iOS Bluetooth