Features of the LG T54 PMP include a 2.4 inch screen, the ability to play AVI at 30fps, MP3s, OGG, WMA and WAV audio, displays jpeg photos, supports text viewing and games.
Measurements of the T54 are 54.4x92.6x11.5mm.
The LG T54 has only been introduced in China so far.
More details Zol (Chinese). Via MobileWhack.