Product Description: Rechargeable Wireless Microphone with Sound Card Key Features: Rechargeable wireless microphone with smart LED display. Advanced microprocessor technology for intelligent noise reduction. High-quality construction to ensure voice protection. Matte touch finish for a comfortable grip. Anti-slip design for easy control. UHF wireless transmission with one-time automatic frequency binding. Anti-interference and strong signal penetration for immediate one-click singing. Technical Specifications: Frequency Response Range: 100Hz - 20kHz Signal-to-Noise Ratio: 60dB Microphone Type: Dynamic Material & Color: Material: ABS Color: Black Package Contents: 4 x Microphones 1 x Host 1 x Power Supply 1 x Audio Cable Note: The package includes only the listed items; other products are not included. Due to light reflection and monitor differences, the item's color may vary slightly from the picture. Allow for a measurement variance of +/-1-3cm.