... recording3, MP3 recording format4, Six files A, B, C, D and M, F5, Recording function of the telephone calls6, Recording ... backlight14, Voice Activated System (VAS)15, Power off automatically and saving features16, Recording file automatically saved before power off17, ... :PC port communication 6:voice format transferable, convenient download and upload 7:time setting , alarm setting 8:appllicable to ...