Sony ICD-PX440 Stereo IC Digital Voice Recorder Built-in 4GB and Direct USB

Sony ICD-PX440 Voice Recorder:Built-in 4GB flash memoryUp to 1,073 hours of maximum recording timeStereo microphone for 75-15kHz audio responseUSB direct PC and Mac compatibilityMemory Card Expansion Slot: microSD/SDHCEase of use with Scene Select and Calendar SearchIntelligent Noise Cut for noise-free recordingsA-B Repeat perfect for playback convenienceTrack Mark function to locate important recording segmentsAdd/Overwrite function for fast and easy editing on the goAAA batteries for up to 96 hours of battery life (recording)