Features

MDLP Support (but not NetMD) 

Large LCD shows both elapsed and remaining time.
ATRAC DSP Type-S.
Button layout resembling portable tape recorders, to ease use by first-timers.
Digital pitch control allows slow or fast playback without change of pitch (useful for e.g. language learning or reviewing a lecture).
Twin Speakers
Automatic Time Track (inserts track mark automatically at regular intervals).
Built-In Monaural Microphone
Voice Mirror (blinks LED as voice signal occurs, assuring the functioning of microphone and recorder).

SONY MZ-B10 - Record everything from lengthy lectures to your own font of inspired words with this compact MiniDisc Voice Recorder. Proprietary MDLP long time recording technology permits up to 320 minutes recording on an 80 minute MiniDisc (in LP4 mode) Large LCD display Built-in monaural microphone Digital pitch control Stereo mic jack All Erase - Single track erase function Track mark function Optical digital line in for copying from other digital sources DC-in jack for use with optional AC or car adapter Includes carrying pouch, headphone, hand strap Dimensions - 4-5/8H x 3W x 7/8D Color - Silver