Built-in studio-grade stereo condenser microphone array Password-protected file encryption WAV recording at 44.1/48/96kHz, 16/24-bit MP3 recording at six selectable recording bit rates from 32 to 320 kbps Record directly to stable and reliable SD/SDHC flash media (2) Balanced XLR Mic inputs with +48V phantom power Dictation Functions including Pitch control and Skip Back Card check compatibility feature Passcode protection for the device Linear style Retake record function Large OLED (organic LED) Display Built-in playback speaker and headphone jack Runs on AC power or 4 x AA Batteries Up to 6 hours of continuous recording time from a set of batteries Includes omni-directional boundary microphone and convenient carrying case