Sony D-NE518CK ATRAC3/MP3 CD Walkman with Car Kit Portable CD player compatible with MP3 files and Sony's ATRAC3plus compression technology Includes SonicStage CD Simple Burner software to facilitate ATRAC3plus CD burning from MP3 files and from other CDs Skip-free G-Protection technology eliminates or reduces skipping during many active uses Includes car kit with remote control for easy listening on the road 40 hours playback with 2 AA batteries (not included)