... USB Li-ion battery 4,accept paypal, 5,frequence: 80-2000HZ 1,support TF card,support FM to radio2,Buil-in LAN-IN port,to connect MP3 ... ,laptop ,MD,CD etc;3,DC, USB,battery can provide power; 3W dual voice built-in, frequence:80 ... damaged and/or misused after receipt). Accessories come with a 3-month warranty.2. Defective items MUST BE reported and returned within ...