[360° high sensitivity pickup microphone head] Adopts high-end microphone head, 360° full directional radio sensitivity is high, anti-noise force is strong, human voice recording fidelity is high [2.4GHZ wireless transmission]2.4GHZ is a wireless Bluetooth digital sampling band, which has the characteristics of stable transmission and long receiving distance, noise reduction and anti-interference [long-distance transmission] The distance is not limited, within 60 meters of the effective distance, you can wireless amplification [Adjustable output amplitude] The receiver has two output amplitude adjustments (single press the power button to switch), better match the use of different amplifiers, and the voice is clearer without whistling [Charging while working] The receiver is equipped with a Type-C fast charging interface, which can be used after 1 hour of charging Battery capacity: 55mAh Transmission distance: about 60m Operating frequency: 2.4G Hz Transmission protocol: Bluetooth 5.2 Sensitivity: -38dB Battery life: 4 hours Charging time: about 1 hour Port: 3.5 Pin port Colour:black Material:ABS Package Contents: 2 * Wireless Microphone 1 * Receiver