Following on from the announcement of four new Walkman phones in the UK last week, Sony Ericsson has announced its first Walkman phone for Japan today.

Japanese wireless carrier KDDI has said it will be launch the W42S 3G Walkman phone made by Sony Ericsson in Japan in June.

The new phone will come with 1GB of internal memory which can be supplemented with up to 4GB of Memory Stick Pro DUO and promises 30 hours of playback.

The phone will also feature a 1.3 megapixel camera, a 2.2-inch, 240 x 320, 262k colour LCD and FM radio.

A result of partnership between KDDI and Sony Ericsson, the phone is compatible with KDDI's Au CDMA2000 mobile network, and supports MP3, AAC, AAC+ and eAAC+ music format files.

The retail price of the phone is expected to be about $180 and users will be able to download music via KDDI's download service which is similar to 3's here in the UK.

Last week Sony Ericsson announced the launch of four new phones including a new Walkman branded model and a phone aimed at the fitness set.