DESC: Sony MZ-N510CK High Speed Net MD Walkman Recorder ( MZN510CK, MZ N510CK ), Car Kit Accessories Supplied, Remote Control Supplied Bookmark Function, AC Adapter Supplied, Record Your MP3s Or CDs At Up To 32X* Speed, Ability To Record From Multiple Sources (PC, Portable CD, Home CD Unit, Radio), Utilizes Affordable MD Media For Over 5 Hours Of Music Storage On One 80 Minute Disc (LP4 Mode), Plays Back In ATRAC3 Audio, Supports MP3, WMA, WAV, Up To 56 Hours Continuous Playback Using 1 "AA" Battery (LP4 Mode), Internal Battery Compartment Holds 1 "AA" Type Battery.