... 2, Direct FM Radio recording 3, MP3 recording format 4, Six files A, B, C, Digital voice recorders1, Recording files are ... named by date2, Direct FM Radio recording3, MP3 recording format4, Six files A, B, C, D and M, F5, Recording function ... :applicable to be used as removable hard disc 5:PC port communication 6:voice format transferable, convenient download and upload 7 ...