Brother P-Touch QL-1050N. Print technology: Direct thermal, Print speed: 110 mm/sec. Standard interfaces: USB 2.0, Serial. Internal memory: 2 MB, Maximum internal memory: 4 MB. Maximum label width: 10.2 cm, Maximum label length: 3m. Tape type: DK, Built-in barcodes: EAN128, EAN13, EAN8, PDF417, QR Code, UPC-A, UPC-E