The Hamilton HACX-205 CD/MP3 Player is built to deliver the latest audio technology to the classroom in an easy-to-use package. Our CD player will handle recordable media including CD-R and CD-RW as well as play back MP3 files through the USB port. The 3W amplifier and built-in speaker deliver clear sound to small groups. This CD player is a great way to give audio and music lessons to students of all ages! Product Features: ; Plays Audio CD, CD-R, CD-RW via Top loading CD Transport; Plays MP3 files on USB Flash drives through built-in USB port ; Backlit LCD Track display ; Built-in 3W amplifier and speaker ; CD Anti Skip Technology ; 1/8"and 1/4"stereo outputs for connecting headphones and jackboxes ; Digital pushbutton volume control ; Runs on 6V Wall Power adapter or 4 "D" Batteries (Not Included); One year warranty