2 in 1 Wireless Headset Microphone Voice Amplifier for Teachers, Lecturers, and Tour Guides Universal Public Speaker B
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Carrier Frequency Band: 2.2-2.48GHz Modulation Method: GFSK Carrier Stability: 1/10,000,000 Receiver Sensitivity: -93dBm SNR: 80dB THD+N: 60 meters...
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