The Zebra RFD90 is a UHF RFID sled that clips onto a compatible mobile computer or phone (in gun-grip form here) to turn it into a handheld RFID reader, used for scanning RFID tags in retail stock-takes, warehouse inventory and asset tracking. This 'Premium Plus' configuration includes a standard-range circular polarised antenna for reliable tag reads at typical working distances, plus a SE4850 extended-range 1D/2D barcode imager so the same device can read both RFID tags and traditional barcodes. It connects to a host device via Bluetooth or Wi-Fi, giving warehouse and retail staff a combined RFID/barcode tool rather than needing two separate devices.