The Brother QL-820NWB offers flexible connectivity - Bluetooth wireless technology, Ethernet and Wireless (802.11b/g/n) interfaces. Also equipped with a USB Host interface, the Brother QL-820NWB is well-suited for use with a peripheral such as a scanner. Create amazing Black/Red labels using DK-2251 or cost-effective, paper labels for packages, name badges, postage and more. Ultra-fast, printing up to 110 standard address labels per minute with black text at 300 dpi. Create and print labels from your mobile device when connected to a wireless network via: AirPrint, Brother iPrint&Label.; Using the free, Brother iPrint&Label; app with your Apple iPhone, iPad, and iPod touch or Android smart phones you can quickly access and print label templates - or create your own custom labels with graphics or photos. Easy to read Backlit Monochrome LCD screen allows for standalone use. Add an optional Li-ion battery for a complete mobile solution. Easy to integrate with free software development kits. Uses convenient, Brother genuine DK drop in labeling supplies. Needs no ink or toner. Windows and Mac compatible.