Sony has launched three new Walkmans at IFA, including the new S-series that are the slimmest yet.

The devices are 7.5mm thin and will be available in two main types: the S630 and S730 series. The main difference between the two is noise cancelling on the S730 models. Both can play MP3 audio files and also support video playback via a 2in display with QVGA (320 pixels by 240 pixels) resolution.

Features include the ability to select one of ten pre-installed themes or a favourite picture as wallpaper and drag-and-drop transfer of songs from iTunes via supplied software. They also support several audio and video formats including MP3, WMA, non-secure AAC, PCM, JPEG for photos, Windows Media Video with digital rights management, H.264/AVC and MPEG4.

The S730-series models will be available from September in North America and both the S630 and S730 series from October in Europe. The NWZ-S736F has 4GB of storage and will cost $150 (£75), while the NWZ-S738F has 8GB and will cost $180 (£90). Sony didn't announce European pricing.

The S-series models will come pre-loaded with 8 video tracks from Sony BMG artists, including Chris Brown, Sandi Thom and The Ting Tings.

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