The Only 3in. Print Width UHF RFID Mobile Printer On the Market Add UHF RFID encoding to your on-the-go workforce without sacrificing rugged capabilities. Zebra's ZQ511 RFID is the only 3-inch RFID mobile printer on the market, and it's part of the most rugged printer series. With military-grade engineering and enhanced durability, it can withstand the harshest conditions. Put it to the test and push the limits on productivity.