Voice Operated Recording -- activates the recorder only when audible sound is present Microphone and Earphone Jack Fast Playback plays back the recording at a faster pace for quick review Clear Voice Plus Recording System 400mW Speaker Output Power 3 Digit Tape Counter Built-In Microphone One Touch Record from Playback Cue and Review with Slide Control Sony-Matic Automatic Recording Level Control Automatic Shut-Off at End of Tape -- lets you know when you have reached the end of the tape 2-Speed Record/Playback L/R Monaural Earphone Jack Hinged Battery Lid -- easy to open/close battery lid for easy replacement of batteries Battery Alert LED -- visible indication of low battery power DC-In Jack permits two-way power operation Includes Carrying Strap Slim High Tech Design -- Controls are all in-line for easy use