NGS Apollo Blue 4GB . Total storage capacity: 4 GB. Video formats supported: AVI, DAT, FLV, RM, RMVB, WMV, Image formats supported: GIF, JPG, PNG, Audio formats supported: MP3, WMA. Frequency response: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 80 dB. Compatible memory cards: SDHC. Display: TFT, Display diagonal: 71.1 mm (2.8 "), Display resolution: 400 x 240 pixels