Clear & Noise Reduction worker : The device is equipped with high-quality collector, smart dynamic noise reduction, professional device adopts digital triple noise reduction technology, realizes 360 omnidirectional working, It can easily cope with various noisy environments and truly restore information, It is ideal for lecture, meeting, class, interview work etcPortable devices enhance learning and work: Our product design is compact and can help students, teachers, journalists, and various groups of people save information in teaching, speeches, meetings, interviews, improving work and learning efficiencyUniquely designed AVR pattern working : Turn the switch to "AVR" to enable AVR mode, it starts working when recognizes more than 45 DB around. Stops when quiet. This Mode will save battery life and working time for much longer working sessions. Our new working sensor will ensure to capture information in the high-quality , so you won't miss any important information.Flash Drive Devices Built-in 64GB Memory & Rechargeable Battery: Store up to 800 Hours of high-quality working files with a large 64GB memory capacity. This device equipped with a high-end 250 mAh rechargeable battery that can be fully charged in under 2 hours, working up to 18 hours continuously.One-Key start : Turn the switch to "ON" for about 5 seconds to start , and turn it to "OFF" to save the working and shutdown, there are no complicated steps, easy to use, Each file will be named with a timestamp, making it quick and easy to locate the file on your computer, easy to manage, Also, it can work while charging (excluding computers), and automatically save your files if the battery is low