Difrnce EB510TFT. Diagonal: 127 mm (5 "), Technology: TFT, Display resolution: 800 x 480 pixels. Document formats supported: pdf, epub, Audio formats supported: MP3, WMA, AAC, WAV, OGG, Image formats supported: JPG, GIF, BMP. Internal storage capacity: 4 GB, Compatible memory cards: MMC, SD, SDHC. Interface type: USB 2.0. Colour of product: White