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Specifications : Enlarged View : The ultimate in wireless headphone listening! The RS 85 wireless RF system with Open-Aire™, circumaural headphones features "HiDyn plus®" noise reduction (used in professional wireless microphone systems) for ultra-quiet and superb sound quality, ensuring a very natural and detailed sound reproduction. Includes Center Lock™ auto tuning. Receiver: Modulation: FM stereo Carrier Frequency: 925.0 MHz/926.0 MHz/926.5 MHz Frequency Response: 20 - 22,000 Hz Thd: Signal To Noise Ratio: > 85 dBA Operating Time: 4 hours per battery Weight: 5.6 oz Max Spl: 101 dB Transmitter: Modulation: FM stereo Carrier Frequency: 925.0 MHz/926.0 MHz/926.5 MHz Frequency Response: 20 - 22,000 Hz Thd: Signal To Noise Ratio: > 85 dBA Power Supply: BA 151 rechargeable battery
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