Flexible connectivity - Bluetooth wireless technology, Ethernet and wireless (802.11B/G/N) interfaces. Usb host interface offers additional functionality. 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 300dpi. Easy to read monochrome LCD screen allows for standalone use. Create and print labels from your mobile device when connected to a wireless network. Add an optional li-ion battery for a complete mobile solution. Easy to integrate with free software development kits. Convenient, Brother dk drop-in labeling supplies. No ink or toner needed. Windows and Mac compatible.