1、Wearable 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. 2、1D 2D QR Scanning: This wearable barcode reader with powerful decoding ability supports 1D, 2D and QR barcode scanning on paper, label or screen. 3、Wireless 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. 4、Wide 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. 5、Instant 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: Ring Barcode Scanner Material: ABS Optical System: CCD Sensor Light Source: Red Visible Light, 632nm Wavelength Resolution:1500 Resolution: >4mil/0.1mm(PCS90%,CODE39) Decoding Speed: Up To 300 Times/Second Depth Of Field: 70mm to 400mm Reading Mode: Manual, Always On, Sensing, Flashing for Reading Prompt Way: LED Indicator Light, Buzzer, Vibration Induction Transmission Distance: 2.4G: 150 Meters / 164 Yards. BT 4.2: 50 Meters / 54.7 Yards(Open Environment) Battery Type: Lithium Battery Battery Capacity :450mAh (Battery Included) Continuous Scanning Time: ≥2.5 Hours Reading System: UPC A, UPC E, EAN 8, EAN 13, ISSN, ISBN, Code128,GS1 128, Code39, Code93,Code32,Code 11, UCC/EAN128, Interleaved 2 of 5, Industrial 2 of 5, Codabar (NW 7), MSI Plessey, RSS, China Post, etc. Communication Mode: Wireless 2.4G, Wireless BT Operating Temperature: 0℃ to 50℃ Storage Temperature: Minus 40℃ to 70℃ Operating Humidity: 5% To 95%(No Condensation) Drop Test: 1.5 Meters / 4.9ft 1 x Ring Barcode Scanner 1 x 2.4G Receiver 1 x USB Cable 1 x User Manual