Item Type: Voice RecorderMaterial: Copper AlloyRecording Format: WAVMusic Format: MP3, WMA, WAVBuilt in Polymer Lithium Battery: 150mAhPackage List1 x Voice Recorder1 x Charging Cable1 x Earphone1 x Instruction Manual1ONE KEY RECORDING: Digital recorder, one key operation, simple and convenient. Suitable for meetings, classes, interviews, speeches and other scenarios. 2NOISE REDUCTION: Small recorder using 8 core DSP active noise reduction chip, recording more clear, output HiFi original sound. Support WAV recording and MP3, WMA and other formats playback. 3PROFESSIONAL: AGC algorithm is used to eliminate small volume, popping sound, and solve the problem of different people voice volume fluctuating after multiplayer mixing. 4VOICE ACTIVATED: This voice recorder supports sound control, automatically record when there is sound, save storage space, but also save time to play back the filtered useless clips. 5TIMESTAMP FUNCTION: The recording device has built in time chip, after synchronizing the time, the recording file is named after the time, which is convenient to find and manage the file.