Sony Portable Digital Voice Recorder With Up To 534 Hours Of Recording Time, 2GB Of Built-In Flash Memory, Plus Additional Storage Available Through The MicroSD/M2 Memory Card Slot, Large LCD Display And Front Controls With Easy Operation, Front Speaker, Easy-To-Read Backlit Display, Record And Play Back In MP3, Intelligent Noise Cut Technology Greatly Reduces Ambient Background Sound Stay organized and entertained with the Sony 2GB Digital Voice Recorder. It has a built-in 2GB memory with an SD card slot, which affords an additional 16GB of storage capacity for lectures, notes, music, meetings or any other audio you may want to record. The maximum recording time afforded by the internal memory is 500+ hrs, but a 16GB microSD card can expand the Sony 2GB Digital Voice Recorder maximum recording time upwards of 4000+ hrs The Sony 2GB Digital Voice Recorder features five different MP3 recording rates to choose from, depending on the quality you desire for each particular recording session. The built-in stereo microphone is omni-directional and features the S-Microphone System, which allows for increased sensitivity when needed and more natural stereo audio reproduction. The microphone also features Hi/Med/Lo gain settings, as well as Voice Operated Recording (VOR). 3.5mm Headphone Out & Microphone Input Omni-Directional S-Microphone System Records In MP3 (192 - 8 kbps) Formats