Fast Transfer FunctionReads data directly from flash memory for fast transfer, and supports TF cards up to 128GB. 880mAh rechargeable battery supports up to 150 hours of continuous recording (256kbps) and 100 hours of headphone playback.Voice Activation and Easy RecordingThis recorder with playback function has 8 different voice decibel levels, which can set the perfect recording level for any situation. With the "VOR" function enabled, this recorder for lectures will only capture the sound of speaking, eliminating blank and whisper segments, saving space and time. With just one button, you can easily record and save named recording files with date and time. Efficient recording to meet your lecture, meeting, interview needs.Clear Recording Quality3072kbps professional recording ratio and built-in stereo condenser microphone, experience a new level of recording quality. The recorder adopts upgraded DSP powerful noise reduction technology, dynamic noise reduction microphone, sound cancellation and filtering for different environments to ensure that you get super clear recording every time.Easy File ManagementThis recorder saves recording files with time stamps (files are named by year, month, day, hour, second), making it easy to find out what you recorded and when. You can connect the included USB cable to your computer to charge and transfer files. Our digital recorder is compatible with both Windows and Mac (for Mac connection, use a USB-C to USB-A cable; the included cable is USB 2.0 Type A).Versatile Recording DeviceThis conference recorder has all the features you need, including A-B repeat, regular recording, loop playback, standard 3.5mm headphone plug, MP3 player, built-in speaker, support for 22 languages, timed recording, MP3/WMA format, variable speed playback, VOR mode, password protection, timed automatic recording, DSP noise reduction chip, and easy file transfer. This is the ultimate professional recording device for all your recording needs.