Black Vox Voice Activated Internal Mic Rechargeable Recorder

This long-duration voice recorder offers 72 hours of continuous recording on a single battery charge. It also has voice activation feature, so recording will only take place when it senses sound, allowing for the battery to last up to 75 days. You never have to worry about the battery running out. Additionally, the voice recorder has an internal storage of 8GB, allowing you to store up to 288 hours worth of audio at a time. Easily transfer audio files to your PC to free memory on the recorder or quickly recharge the unit with the included USB cable. Additionally, it has built-in magnets that allow you to mount it onto metal surfaces, such as under a car seat.