Kenwood DPC-X507 Personal CD Player with 40 Seconds of Anti-Shock Protection Personal CD player supports audio CDs, plus CD-R/RW discs Choose between 10 or 40 seconds of anti-skip protection Program up to 24 tracks with program play mode Bass boost for better sound quality Included AC adaptor can charge optional Ni-CAD batteries; player runs on either 2 or 4 AA batteries