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H-188 Wireless Headphones with Palette surround
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Eliminates environmental (engine & motor) noise ()Stereo palette surround audio frequency range: 25-23KHz(+/-3dB) ()Speaker senility: 105dB; Active noise cancellation: 35Hz-1.8KHz, better than 16dB b
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RH-245 2.4GHz Wireless Headphone System
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RF Transmitter; Transmission carrier frequency: 2.4GHz; Audio input: 0.3RMS Above/auto ()Channel separation: 55dB max; Input impedance: 25k ohm; Channel balance: +/-1.5dB ()Effective range: 180-300 f
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