Genius SP-i300. Player media type: flash-media. Audio formats supported: MP3, WMA, Supported file systems: FAT32. RMS rated power: 2 W, Frequency response: 130 - 22000 Hz, Signal-to-Noise Ratio (SNR): 85 dB. Continuous audio playback time: 8 h, Battery technology: Lithium-Ion (Li-Ion), Battery recharge time: 2 h. Weight: 84 g, Depth: 52.6 mm, Height: 65 mm