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All-metal rechargeable wireless microphone, one with two U-segment KTV universal High-fidelity dynamic microphone core, reducing interference, showing full and clear vocals Plug and play, second link, anti-howling, true U section, rechargeable, adjustable frequency Anti-drop metal mesh cover, built-in high-quality thick sound filter cotton UHF signal transmission, stable signal, strong anti-infection Carrier frequency: 500KHZ Receiving distance: 50M-100M in open area Frequency response: 50HZ-18KHZ Signal to noise ratio: >90db Modulation method: digital frequency modulation Pickup method: moving coil Output level: 200MV±5MV