Hidden Audio Recorder Voice Activated

This is the thinnest & smallest voice recorder you'll find Intelligent Voice Activated Recording Recording is automatically started when sound is detected, and recording is paused when there is no sound.       Voice activated recording HD Audio Noise reduction  Auto-saves when battery dies No indicator flashes   Easy to keep hidden No indicator light flashes or sounds during recording, making the listening device hidden and undetectable.       13 hours of continuous recording Charge for half an hour then use the long battery life for up to 13 hours       Specification: Dimensions:43*23*5mm Weight: about 8g Color: Black Memory:Built-in 8GB/16GB/32GB for option 8GB storage of recording files for 96 hours 16GB storage of recording files for 192 hours 32GB storage of recording files for 384 hours  Bitrate:192Kbps NSR:≥70db Frequency:20Hz-20KHz Microphone: large-scale high sensitivity mic Working time: Continue Recording around 13 hours. Music format: MP3, WAV, WMA