Digital Voice Activated Recorder, Trustin 8GB Sound Audio Recorder Dictaphone for Lectures Meetings, USB, RechargeableMP3 Play (Black) Voice Activated Recording :Set it and forget it. The recorder will automatically start recording when sound is detected and you can set it to start recording at a specified time. Dual Power Supply System :built-in 360 mAh Li-ion rechargeable battery gave around 18 hrs of record time. AAA alkaline battery provided additional 12 hrs.of recording Voice Recorder More : Two ultra-sensitive condenser microphones with dynamic noise reduction means And High quality PCM Recording (.wav format), get clear sound,8G Memory audio recorder, could store up to 560 hours recordings file (when set recording quality at 32kpbs); Recorder with more function : Recording files and Music, perfect for quick review recordings or learn a new music simply press the A-B button to set A-B repeat, you can also set repeat times and repeat interval. Great design:This item is the updated version, and we cancelled the external microphone already! Can not connect the microphone cableBut With the mic of machine itself can record a High Quality Voice.