The following are specifications for the Sound Blaster Wireless Music (and taken straight from the Creative Labs website)

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Size (WxHxD) : 6.89" x 5.51" x 1.1" |

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Playback Formats : MP3 (bit rates of 32kbps-320kbps); WMA (bit rates of 16kbps-192kbps) |

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Signal-to-Noise Ratio (SNR) : Up to 98dB |

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Channel Separation : Up to 95dB |

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Harmonic Distortion : < 0.009% |

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WiFi Standard : 802.11b (802.11g compatible) |

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WiFi Data Transmission Rate : Up to 11mbps (802.11b) |

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WiFi Communication Range : Up to 98ft* |

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WiFi Operating Frequency : 2.4GHz |

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Interface : USB1.1 (for advanced network setup) |

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Button : Remote Control Finder |

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Line Outputs : 2 x RCA Jacks, 1 x Optical Jack |

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Output Power : 2Vrms |

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Power : AC in 6V |