Feature: 1. Can interpret all kinds of 1D/2D code, direct Chinese 2D code. 2. Support Android/iOS system, can replace PDA, scanning , mobile phone scanning3. 512000 characters can be stored in offline/inventory storage mode Bluetooth connection, easy and fast4. Wireless Bluetooth empty 50-100 meters5. This barcode scanner is the best partner to work with a phone, it is designed to clip into the back of your phone, by simple Bluetooth connection operation, when you scan the barcode, you can check barcode data or quantity upload on the phone simultaneously, easy to use.6. Also, with 2 scanning button , you can choose the best press button to scan when you use it, giving you better user experience. 7. What's more, if you need, you can use it as a normal Bluetooth scanner to work with phone, and computer via Bluetooth connection. 8. Built-in 3000mAh battery, can continue work up to 6-10 hours but only need 3 hours to charge. Warmly Tips: 1. When you use this back clip barcode scanner, if your phone case is very thick and rigid, it is recommended to remove the phone case and then install it on the phone. Otherwise, it will appear that the barcode scanner cannot hold the phone, causing the phone to fall off and break. more, please do not use violence to pull the retractable rod or the 4 clips of the barcode scanner, otherwise, the barcode scanner will be damaged and unusable. 2. Many customers will ask how to turn off the barcode scanner. By default, in order to save battery power, we set the scanner will go to sleep mode automatically if there is no operation for over 5 minutes. You can set the time interval to be longer "10 minutes", "30 minutes" or "Never Sleep". 3. if you have any problem with this barcode scanner, please contact us freely. color: Black material: plastic Due to different product batches, the appearance may be different, which does not affect use. Package Contents: 1 x Barcode Scanner 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.