Model # NWZ-A728 | This model is also known as: NWZ-A728BRUCE, NWZA728, NWZA728B, NWZA728BLK, NWZA728BLKBB, NWZA728BLKCC, NWZA728BRUCE, NWZA728KEN, NWZA728KEYS, NWZA728P, NWZA728PINKBB, NWZA728PNK, NWZA728PNKBB, NWZA728PNKCC, Serial Number Location: On the back of the unit. |