The Zebra ZQ620 Plus is a compact, portable/mobile label and receipt printer built for field service, retail and logistics staff who need to print on the move rather than at a fixed desk. This unit prints on 3-inch (72mm) media, supports English fonts, and uses a linerless platen with a 0.75-inch core — meaning it can print on linerless label stock (no backing paper to peel and discard), which cuts waste and lets a roll hold more usable label length. Connectivity is dual-band Wi-Fi 6 (802.11ax) and Bluetooth 5.3, keeping it paired to a handheld terminal or POS system wirelessly. "Group E" typically denotes a specific regional/certification or accessory bundle in Zebra's ordering system, which the listing doesn't spell out further.