Sony Ericsson W380 is a mobile phone that belongs to the Walkman series. The Sony MZ-DH10P Walkman was released to showcase the format. The accompanying 10th anniversary playback-only MiniDisc Walkman, the MZ-E10, was also released. Sony produced the world's first portable music player, the Walkman in 1979. In 1979, Sony had introduced the Walkman in Japan. Pieces of Calico's Sony Walkman and a cassette tape were later discovered along the road. Sony's own line of DAPs is known as Network Walkman. The Sony NWZ-A826 is one of many MP3 players belonging to the Walkman Z-series. Eventually the whole of the Network Walkman line would be discontinued for Sony's new solution. The three possible answers were&colon; Macintosh computer, Sony Walkman, and Post-it Notes. Dennis's new attire consisted of a blue tracksuit, sunglasses and headphones connected to a walkman. Walkman, the first stereo cassette player, was launched in 1979. The NW-A919, a 16GB video walkman with a digital '1seg' TV tuner. Its popularity was reinforced with its use on the Walkman portable tape player in 1979. The name was changed to CD Walkman worldwide in 2000 along with a redesigned "Walkman".