Meet the Brother RuggedJet 4 WiFi: a handy receipt and label printer that will last you for a while. It is IP54 certified to withstand dust and moisture. It can also survive a 6-foot drop. The design is compact and portable. It offers up to 203dpi resolution. The RuggedJet 4 printer is compatible with Android, Windows, and iOS. In fact, iOS users can rely on AirPrint technology to print labels and receipts from 2″ to 4″ wide faster.
The device is ideal for use in manufacturing, public safety, retail point-of-sale, and field service businesses. Not cheap though.