1、Wearable Ring Design: The design of the ring scanner is very special and portable. This mini barcode scanner allows you to wear it on the left or right with your fingers, increasing your satisfaction and comfort. 2、4g Wireless Connection: The wireless transmission distance of our wireless barcode scanner's BT barcode scanner can attain 10 meters, which can increase productivity by 10%‑30% compared with ordinary wired handheld scanners. 3、Compatible Devices: The barcode scanner includes a USB receiver, which can support for Windows XP, Win 7, Win 8/10 system PCs, for Android devices, and for IOS devices. 4、Built in Flash Memory: Built in 512K flash memory, which can store 5000‑10000 bar number data. 5、Easy to Use: You can directly scan barcodes to tablets and smartphones without installing any software.