1. One-k scanning mode switching and high, medium and low resolution , easy to operate 2. The number of scanned sheets can be seen in real time, no need to install any professional driver software 3. The card directly stores and reads the scanned data, which can be realized by a card reader or by connecting a USB cable. 4. The scanned data is in JPEG format or PDF format, you can choose by yourself. 5. The power supply is ordinary No. 5 battery, which is easy to carry when going out to work and easy to replace.