Grundig MPaxx 920 2GB. Player media type: flash-media, Total storage capacity: 2 GB. Audio formats supported: MP3, WMA. Frequency response: 20 - 20000 Hz, MP3 bit rates: 8 - 320 Kbit/s, WMA bit rates: 32 - 384 Kbit/s. Continuous audio playback time: 12 h, Battery technology: Lithium Polymer (LiPo). Weight: 25 g, Depth: 34 mm, Height: 9 mm