The Olympus DM-450 digital voice recorder is ideal for taking notes, whether you are in a lecture or in a meeting. This Olympus voice recorder has an internal memory of 2 GB and an additional memory card slot, allowing you to store and transfer data. The built-in stereo noise-canceling microphones in this digital voice recorder reduce ambient noise, letting you hear the playback clearly. The Olympus DM-450 has 51 hours of battery life, making way for uninterrupted and continuous recording. With Voice Guidance feature and tactile buttons, even visually impaired people can use this Olympus voice recorder.