[360° High-Sensitivity Pickup Microphone Head] Features a premium microphone head with 360° omnidirectional pickup, strong noise rejection, and high-fidelity human voice recording. [2.4 GHz Wireless Transmission] Operates on the 2.4 GHz digital wireless band, offering stable transmission, extended reception range, noise reduction, and anti-interference performance. [Long-Range Transmission] Effective wireless range up to 60 meters for clear audio amplification. [Adjustable Output Level] Receiver includes two output level settings (toggled by pressing the power button once) to better match various amplifiers and prevent feedback or whistling. [Charge While in Use] Receiver equipped with a Type-C fast-charging port; provides full operation after approximately 1 hour of charging. Battery Capacity: 55 mAh Transmission Range: Up to 60 meters Operating Frequency: 2.4 GHz Transmission Protocol: Bluetooth 5.2 Sensitivity: -38 dB Battery Life: Up to 4 hours Charging Time: Approximately 1 hour Output Port: 3.5 mm audio jack Color: Black Material: ABS plastic Package Includes: 2 × Wireless Microphones 1 × Receiver Note: Color may vary slightly due to lighting and screen settings. Measurement tolerance: ±1–3 cm.