Feature 1Wearable Style: This ring barcode scanner features wearable ring design that allows you to wear it on finger, hands free experience greatly improves your working efficiency. 21D 2D QR Scanning: This wearable barcode reader with powerful decoding ability supports 1D, 2D and QR barcode scanning on paper, label or screen. 3Wireless Connection: This finger barcode scanner with 180 degree rotatable head can be easily connected with PC, POS, smart phone and tablet via 2.4G wireless receiver, BT or USB cable. Compatible for Win XP/7/8/10, for OS X Laptop, for Linux. 4Wide Application: This finger barcode reader supports scanning most 1D, 2D and QR barcodes on paper, labels or screens. Such as EAN, UPC, Code39, Code128, Industrial 25, Matrix 2/5, DataMatrix, PDF417, Aztec, Maxicode, Hanxin, etc., including some special barcodes such as color barcodes. 5Instant Upload: This mini barcode reader supports instant upload and storage mode. Sound and vibration can be turned on or off, which ensures great flexibility and convenience.Item Type:RingBarcodeScannerMaterial: ABSOptical System: CCDSensorLight Source:RedVisible Light, 632nm WavelengthResolution:1500Resolution: >4mil/0.1mm(PCS90%,CODE39)Decoding Speed: Up To 300 Times/SecondDepth Of Field: 70mm to 400mmReading Mode: Manual, Always On, Sensing, Flashing for ReadingPrompt Way:LEDIndicator Light, Buzzer,VibrationInductionTransmission Distance:2.4G: 150 Meters / 164 Yards.BT4.2: 50 Meters / 54.7 Yards(Open Environment)BatteryType:LithiumBatteryBatteryCapacity:450mAh (BatteryIncluded)Continuous ScanningTime: 2.5 HoursReading System:UPC A, UPCE, EAN 8, EAN 13, ISSN, ISBN, Code128,GS1 128, Code39,Code93,Code32,Code11, UCC/EAN128, Interleaved 2 of 5, Industrial 2 of 5,Codabar (NW 7), MSI Plessey, RSS, China Post, etc.CommunicationMode:Wireless2.4G,WirelessBTOperating Temperature: 0 to 50Storage Temperature: Minus 40 to 70Operating Humidity: 5% To 95%(No Condensation)Drop Test: 1.5 Meters / 4.9ft .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x RingBarcodeScanner1 x 2.4G Receiver1 x USB Cable1 x User Manual