QUICKLY RECORDING: This voice recorder has voice-activated recording(VAR) mode and normal recording mode. You can set VAR mode on PC quickly. VAR mode will record when with sound and stop record when no sound!BIG CAPACITY: This voice activated recorder features 64GB built-in memory which can store 1136H recording file at 128KBPS. And built-in 230mAh battery can support 24-30hours of continuous recording. Size: (6.1x3.2x1.0)cm.SMART FEATURES: This professional voice recorder will automatically save recording when low power or power off, will protect your important recording file. And during recording, the voice recorder is silent, no sound and light. Also support Long distance recording!CLEAR SOUND& QUICK PLAYBACK: Adopts newest DSP intelligent noise reduction Technology and 360 degree sound pickup design, the audio recorder can produce quality recording with an authentic stereo experience. And you can enjoy the clear recording through the device by earphones, or android phone with the OTG cable, or computer with the data cable.