Never miss another thought, word or note with the ICD-SX733D digital voice recorder. Equipped with Dragon Naturally Speaking software, you can capture your thoughts and ideas for later translation to text using your computer. Capture exceptional audio quality via the built-in, 3-element stereo microphone while a built-in, memory card expansion slot allows additional recording time for up to a maximum 1,073 hours. Built-in, 4GB flash memory provides up to 159 hours. Compatible with PC and Mac, this voice recorder also has a convenient, retractable USB terminal for direct connectivity. Dual analog to digital converters work in tandem to deliver wider dynamic range with minimized distortion. Pre-record Mode buffers sound for five seconds before the record key so you don't miss a word or note. When activated, the Voice Up function amplifies low volume sounds so distant voices can be heard. Built-in rechargeable battery delivers up to 19 hours of recording time.