MPIO MG100 4GB . Player media type: flash-media, Total storage capacity: 4 GB. Video formats supported: AVI, MPEG4, WMV. Frequency response: 20/20000 Hz, Signal-to-Noise Ratio (SNR): 90 dB, MP3 bit rates: 8 320Kbps. Continuous audio playback time: 20 h, Battery technology: Lithium Polymer (LiPo), Continuous video playback time: 6 h. Weight: 42.5 g, Depth: 9.2 mm, Height: 87.2 mm