Supplied accessories, About the serial number – Sony NWZ-E436FBLK User Manual

NWZ-E436FBLU, NWZ-E435F, NWZ-E436FBLKWM, NWZ-E436FRED, NWZ-E436F, NWZ-E436FPNK, NWZ-E436FREDWM, NWZ-E438FRED, NWZ-E438FBLK, NWZ-E435FSLVWM, NWZ-E438F, NWZ-E438FPNK