Wireless 2D Barcode Scanner Reader Wired QR Code U4 Camera is a barcode scanning device designed for retail, point-of-sale, inventory, warehouse, and general data-capture applications. The listing identifies wireless connectivity, and some versions also support wired scanning. The product title identifies 2D and/or QR-code scanning support. The exact barcode symbologies, transmission range, battery capacity, scan speed, interfaces, and operating-system support depend on the specific model. Buyers should verify the current product listing and included accessories before purchase. This description does not infer technical specifications that are not stated in the supplied source information.