... It support Mp3,Mp4,cellphone,FM radio ,easy to apply to PC,mobile phone,easy to carry it everywhere.2) We can follow up ... different color . Red,black,white..3 ) We can help to solve your export or import customs clearance procedures if necessary ... LITHIUM BATTERY(DC 5V)==SIGNAL TO NOSIE RATIO:>=75 DB==FREQUENCY RESPONSE:100HZ~18KHZ Portable speaker,multimedia speaker,small speaker,FM speaker HM-MPR4