The Datamax-O'Neil Apex 4 Durable Mobile Receipt Printer comes standard with 4" printing and USB and Bluetooth V2.0 wireless communication. 802.11b.g for wireless local area connection (WLAN) is available as an option in place of Bluetooth. An optional 3-track magnetic card reader allows the Datamax-O'Neil Apex 4 Durable Mobile Receipt Printer to easily process credit card payments. The Datamax-O'Neil Apex 4 Durable Mobile Receipt Printer features a powerful Arm-7, 32-bit processor allows for fast printing, high quality receipts and ample flash and SRAM memory that is under direct user control allows the user to store logos, fonts, graphics and bar codes for fast adaptability to changing business requirements.