Retractable smartphone back clip design: the Tera barcode scanner with retractable back clip can be easily installed on smartphones with a length of 14.73 - 17.02 cm. Covered with a soft protective layer on the clip, the holder will not damage your phone. This lightweight scanner weighs only 90 g and is therefore easy to carry. 【3 Scanners】Design with 3 scans to reach multiple scan positions to left, right, up and down, making it easier to choose a more convenient scan angle. Save time and increase your efficiency. 【3-in-1 Bluetooth Barcode Scanner 】This Bluetooth scanner can be used as a clip-on barcode reader behind your smartphone. In addition to supporting smartphones and laptops, this scanner can support the device without Bluetooth function by using a USB dongle (standard interface) or USB cable. Avoid wasting your money buying an additional Bluetooth adapter for your PC. Works as a power bank (type C interface): the standby time can be about 720 hours when fully charged, with frequent use 120 hours. With a built-in 3000mAh battery, the scanner can charge your device via the Type-C interface cable. 【Multiple bar codes readable】The scanner is equipped with an advanced CMOS sensor that provides excellent detection of 1D-2D-QR barcodes, including Aztec code, Data Matrix, PDF417, Micro PDF417, etc. In addition, the Tera 0012 back clip scanner bar codes on desktop, tablets and smartphone screens as well as labels and special interfaces. .