Features 1.NOISE REDUCTION: Voice recorder built in noise canceling chip, significantly reduce noise sound waves, stable recording in complex environments. 2.ONE CLICK RECORDING: Voice activated recording device is a one touch on off recording and save, recording in one step. 3.ACCURATE TIME STAMP: Digital voice recorder has an accurate time stamp, each file has an accurate recording created time, easy to manage and forensics. 4.DIRECT U DRIVE INSERTION: MP3 recorder uses a USB flash drive direct plug, external USB adapter (not included), a one step connection to cell phones, computers. 5.RECORD WHILE LISTENING: Voice activated recorder can be connected to external headphones to monitor the sound being recorded to ensure the recording effect. specificationItem Type: Digital Voice Recorder Material: ABS Recording Format: WAV Music Format: MP3 WMA WAV Built In Polymer Lithium Battery: 300mAh PackageList1 x DigitalVoiceRecorder 1 x Charging Cable 1 x Instruction Manual 1 x Earphone