... can hold around 960 tracks Music Formats: MP3, WMAUp to 8 hours of continuous playback with rechargeable Lithium-ion ... ) x 16mm(D)Output of Speaker: 10mW(32Ohms)SNR (Signal to Noise Ratio): <45dBLanguages: English, Chinese, French, Italian, Portuguese, ... Korean, German, Swedish, Dutch, Czech, DenmarkUSB: 2.0Compatible Systems (for USB connection): Windows 98SE / ME / XP / Vista (32 bit version ...