The Zebra RW 420 Direct Thermal Mobile Receipt and Label Printer with Bluetooth 2.0 connection and a magnetic-stripe/smart-card reader prints monochrome receipts up to 4" wide at 3" per second and 203 dpi (8 dots/mm). An impact-resistant polycarbonate housing with fused oil-and-abrasion-resistant rubber overmold offers 6" drop protection. It has a 16 MB RAM memory and 8 MB flash memory and sensors for bar and gap media. It accommodates receipt, tag, gap, continuous receipt, continuous, and linerless media. Smart battery management monitors the battery for life and performance. Additional connection options include serial and USB. The core programming languages are CPCL, ZPL, XML and EPL.SpecificationsDimensions*6.9 x 6.3 x 3.0 inches/175 x 160 x 76 mm (H x W x D)Maximum print width4.09"/104 mmMedia label and liner widthMinimum: 2"/51 mm; Maximum: 4.12"/105 mmPrint speedUp to 3"/sec, 76 mm/secMaximum media size2 x 4.12 inchesMedia thickness0.002"/0.05 mm to .0063"/0.16 mmMaximum roll diameter 2.25"/57 mmAgency approvalsFCC Part 15 Class B, Canadian ICES-003,VCCI, NOM/NYCE, CE compliance (Class B), C-Tick, CSA *H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.Thermal printers can be used to print receipts, labels, tags, and other similarly sized media at point of sale (POS) locations. Direct thermal printers and thermal transfer printers use heat instead of ink to print on coated thermal media. A parallel, serial, or USB port allows a receipt printer to be connected to a computer. An Ethernet port or wireless capabilities may enable it to be connected to a computer network. Thermal printers can be used at retail checkout counters and other points of sale.Zebra Technologies manufactures barcode, receipt, kiosk, and radio-frequency identification (RFID) printers and accessories. The company, founded in 1969, is headquartered in Lincolnshire, IL.