CMX GAc2800 4GB. Player media type: flash-media, Total storage capacity: 4 GB. Display: LCD, Display diagonal: 71.1 mm (2.8 "), Display resolution: 320 x 240 pixels. Audio formats supported: ASF, MP3, WAV, WMA, Video formats supported: AMV, AVI, Image formats supported: BMP, GIF. Headphone connectivity: 3.5 mm. Continuous audio playback time: 12 h, Battery technology: Lithium-Ion (Li-Ion), Battery capacity: 1250 mAh