Feature: 1. Convenient Wearing: Finger wearing is convenient, fast, small, and lightweight, saving effort and worry when worn on the finger. 2. Large Capacity: Can scan without connecting the device, and the scanner will automatically record the scanned information. After connecting to the device, there will be no missing uploads, and 120,000pcs barcode can be saved. 3. Long Working Hour: Low power consumption and ultra long standby 500mAh lithium polymer battery, fully charged, can continuously scan around 1,500 barcodes, and the scanner reader can be set to not work and enter sleep mode. 4. Wireless Connection: Bluetooth connection supports three major systems, including compatible with IOS, compatible with Windows, and compatible with Android, with a 15 meter open space communication range. 5. Wide Application: Widely used in multiple industries such as supermarkets, shopping malls, stores, pharmaceuticals, book management, express delivery, clothing, etc. Specification: Item Type: Ring Barcode Scanner Material: ABS Battery: 1 x polymer battery with 500mAh battery capacity, shipped with built in battery. Image Sensor: 640 x 480, CMOS Decodable Formats: compatible with EAN-8, compatible with EAN-13, compatible with EAN-13 2 add on, compatible with EAN-13 5 add on, compatible with ISSN, compatible with ISBN, compatible with UPC-A, compatible with UPC-E, compatible with Code 32, compatible with Code 39, compatible with Code 39FULLASCII, compatible with Code 93, compatible with Code 128, compatible with Codabar, compatible with Industrial 2 of 5, compatible with Interleaved 2 of 5, compatible with Matrix 2 of 5, compatible with ISBT-128, compatible with GS1-128, compatible with GS1 DataBar RSS14, compatible with GS1 DataBar Limited, compatible with GS1 Databar Expanded, compatible with PDF417, compatible with Micro QR, compatible with Data Matrix, compatible with QR code, compatible with Aztec. Minimum Recognition Accuracy: Code 39, 5mil