Create amazing Black / Red labels using DK-2251 or cost-effective, paper labels for packages, envelopes, file folders, name badges, postage & more. Wireless interface offers easy connectivity – print from virtually anywhere or share on a network. Ultra-fast, printing up to 110 standard address labels per minute with black text at 300 dpi. Create & 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 (Windows, iOS, & Android). Convenient, Brother DK drop-in labeling supplies. No ink or toner needed. Windows & Mac compatible. Power Source(s): AC Adapter (Included); Maximum Tape / Label Width: 2.4"; Printing Speed: 110 Labels / min; Maximum Resolution (Dpi): 600 dpi.