1、Wear on Finger: Very small and lightweight to wear on your fingers, and the compact size will largely simplify the code reading. 2、Large Memory: You 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 5000pcs barcode can be saved. 3、Built in Battery: 300mAh lithium polymer battery, when fully charged, it can continuously scan around 1500 barcodes, and the scanning gun can be set to not work and enter a sleep state. 4、Reliable Working: The built in ID will better facilitate the recognition in large warehouses, thus greatly improving the overall working efficiency. 5、Bluetooth Connection: Supports three major systems, and can connect to for IOS, for Windows, for Android with a 10 meter communication range. 6、Broad Utility: Widely used in multiple industries such as supermarkets, shopping malls, stores, pharmaceuticals, book management, express delivery, clothing, etc. Item Type: Wireless Ring Barcode Scanner Operating Systems: For Android, for OS X, for Windows. Bluetooth: Bluetooth 2.0, EDR2.4-2.5G, ISM public frequency band. Bluetooth Distance: Approx. 10m / 32.81ft in open area. Reminder: Buzzer, vibrator, LED light. 1D Code Reading Accuracy: ≥ 5MIL Inventory Storage: 5000pcs barcode. Data Communication: SPP/HID or SPP/BLE. Memory: 16MB storage space, able to store up to 200000 pieces of data. Operating Environment: Storage Temperature: -20℃ to 70℃. Humidity: 0-95℃, non condensing. data mode: Upload mode and inventory mode. Battery: 1 x rechargeable lithium battery, 300mAh. Shipped with built in battery. 1 x Wireless Ring Barcode Scanner 1 x USB Cable 1 x Wireless Receiver 1 x User Manual