... mp3 player OLED display, 3W stereo loud speaker, TF card slot; FM radio,Polymer battery Hot! unique ... digital mp3 player with loud speaker and TF card slotFunction 1. OLED display, 3W stereo ... 4. Text and Telbook reading function 5. Support TF card,6. Big capacity battery, up to 400mAhSolution: BR3188 Net ... 39*19.5mm Optional Capacity: 512MB~16GB for TF card Optional Colors Black,pink, red, blue, ...