Toshiba is refreshing its line-up of Gigabeat music players with new models including one that packs built-in Wi-Fi connectivity.

The Gigabeat T-series are about the same size as a credit card - 8.6cm by 5.4cm -- and are 1cm thick. Most of the front face of the player is taken up with a 2.4in LCD (liquid crystal display) screen that offers QVGA (320 pixels by 240 pixels). Under the screen are some buttons for control of the device and navigation of menus.

The 58g player is compatible with Windows Media Audio, WMA 9 Lossless, MP3 and WAV audio files and can also display JPEG. It does not support video.

There are two basic models both of which have 4GB of flash memory. The T401 includes 802.11b/g Wi-Fi connectivity for downloading podcasts. It will be available in black while the second model, the T401S, doesn't have Wi-Fi and will be available in black, red and white. With the exception of the Wi-Fi the players are identical.

The Gigabeat T-series will go in sale in Japan on September 7. The T401 will cost about ¥29,800 (£130) and the T401S will be about ¥24,800. UK launch plans have not been announced.