Sony Ericsson has released their first walkman phone W42S for Japan's KDDI telco last week. The phone has incorporate their past minidisc/walkman jog dial design, and giving a 30 hours long music playback time.

The model "W42S" is made by Sony Ericsson for CDMA 1X network. The walkman phone is the first released in Japan and is able to play music continuously for 30 hours. It will be available end of June. A Mobile Music Enhanced chipset is being used in the phone. The chipset MSM6550 has a lower power consumption compare to other music decoder. Need to store more music files, a 1GB internal memory is available built in. You can transfer the music files from your pc to the phone via USB cradle and SonicStage software. The music player support music format like ATRAC3plus, ATRAC3, WAV, MP3, WMA and AAC.

The memory can be further expanded through the memory stick duo slot. Up to 4GB of the memory card is supported. Adding up the original 1GB, it will give you a total of 5GB space, much more than a normal mp3 player.

Sony Ericsson has also re-used their previous jog dial design in minidiscman. The extended silver metal let you hang the phone on your neck and also giving you easy access to music playback operation. You can activated the music player, navigate the song list and adjust the volume.

Other than music files, FM radio receiver is also available in this phone. The retail package comes with a headset which can be used as a remote control too. 262k colors display screen is a QVGA screen, giving you 240 x 320 resolution on a 2.2 inches screen. Sony Ericsson promised to use a ultra hard coat layer on the screen to protect the phone. Lastly, the phone is 49 × 106 × 24mm in size, and 123g for the weight.

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