Easy voice-activated recording - just push the switch to "VOR" (middle) to start voice-activated recording, it will record when sound is detectable (over 45dbs), and stop when no sound is detected, to ensure Make the most of your memory. Push the switch to "Off" to save the recording and turn off the device. 3000mAh - This mini recorder has a built-in 3200mAh rechargeable battery, which can support up to 365 days of standby time or 500 hours/15-20 days of continuous recording time when fully charged. STRONG MAGNETIC AND MULTI-PURPOSE - With strong magnetic absorption, this small digital recorder can be connected anywhere, making recording secret and easy. With a portable mini size, this recording device is perfect for lectures, conferences, interviews, classes, forensics, and more. Professional Digital Recorder - Connect the recorder to your computer (using the original data cable) to sync time before recording. Support computer (WAV format) and headphone playback. You'll get high-fidelity recordings, and you can record sound as long as your ears can hear it.