Voice Tracer Digital Recorder delivers superior distance recording with 3Mic AutoZoom Plus that suppresses surrounding noises for crisp, clear recordings. A motion sensor automatically selects the right microphone for each situation. Capture lectures and interviews in outstanding sound quality. The pre-recording function allows you to record the last five seconds before you press the record key. Operation is easy and intuitive with plug and play in Windows, Mac OS and Linux and a large color display. Use the calendar search for quick, easy retrieval of recordings. Voice-activated recording is a convenient feature for hands-free recording. Rechargeable li-polymer battery allows extra-long recording. 4GB internal memory allows up to 44 days of recording. MicroSD memory card slot provides virtually unlimited recording. Robust metal design offers extra durability.