... function: Connect computer,mp3 mp4 , i-Phone music; 3,The capacity is 1450mAH,the play time will be 9 hours.4 ... D digital amplifier,sounded great;5,High capacity memory can store great amounts of data and music(TF card for choosing)6,All in ... USB(5V/1A)AC transformer charging:4 hours (make selection);Storage capacity:2G,4G,8G;interface transmission:USB 2.0 Full speed ...