Coby, Personal MP3/CD Player, Plays Regular CDs & CDs With MP3 Files, CD, CD-R, CD-RW Compatible, Programmable Track Memory, Digital Anti-Skip Circuitry, 45-Sec In CD Mode, 120-Second MP3 Mode, 3.5mm Headphone Jack, Digital LCD Display, Dynamic Bass Boost System DBBS, Integrated Rechargeable Battery Circuitry, Requires 2 x 1 "AA" + Batteries Not Included, Low Battery Indicator, DC 4.5V AC/DC Adapter Jack.