The imager Barcode Scanner is equiped with advanced CMOS sensor, which can easily capture 1D/ 2D QR/ PDF417/ Data Matrix,etc bar codes from paper and screen, such as computer monitor, smartphone or tablet, effectively compensate for the problem that laser scanner can not identify screen code. Physical power switch: save energy in case of error operation. The Pocket bar code scanner comes with 3-in-1 Connection Design Compatible with Bluetooth Function; 2.4G Wireless connection receiver; Wired connection. Easily connected with your laptop, PC, mobile phone, tablet, iphone, ipad, POS. Work with Windows XP/7/8/10, Mac OS, Windows Mobile, Android OS, iOS Manual Scan & Auto-sensing Scan & Continuous Scan. 1200mAh battery ensures 20 hours of continuous handsfree scanning, no pressing the button for efficiency. Two upload mode :Instant upload mode / Storage mode. Internal offline storage supports up to 100,000 barcodes in offline storage mode. Scan and store barcode when far away from the receiver, and then batch upload the data to your device when you need it.