Allinone portable media player with integrated CD playback, Bluetooth transmission, loop repeating, TF CARD3.5mm audio output function Supports CD/CDR/CDRW/MP3/MA/AV formats for versatile playback Builtin 2000mAh battery for long playback time and worry battery life Lightweight and compact design: net weight 330g; size 138 x 165 x 25 mm No concerned chemical: None Use scenarios 1) At home or in the office: connect via Bluetooth to a speaker for wireless listening, or use the 3.5mm output for wired headphones or speakers 2) On the go: carry with you and use a TF card containing MP3s for listening, with long battery life from the builtin 2000mAh battery 3) In classrooms, studios, or small events: play CD or MP3 content for teaching, practice, or presentations; enable loop repeating for continuous playback