Features: 1. Wireless Karaoke Microphone System: UHF wireless microphone produces high-quality clear sound without distortion. The professional dynamic microphone set comes with 3 built-in rechargeable and replaceable batteries. 2. 1200mAh battery for extra long usage time: 3 rechargeable replaceable 18650 batteries included, no need to buy additional batteries. Provides up to 10 hours of operation on a full charge, which takes about 3 hours. The microphone display shows the battery level and signal strength in real-time. The microphone and receiver are professionally drop-tested for high impact resistance, lighter weight, and higher abrasion resistance. 3. Signal stability: The high-sensitivity professional dynamic microphone extends the working range up to 160ft (50m), eliminating issues with tangled wires. UHF wireless microphone with built-in cardioid pickup pattern delivers a clearer signal and improved sound quality, reducing interference and signal dropouts. 4. Plug and Play: Simply plug the receiver into the MIC jack. The receiver automatically syncs its frequency with the microphone. Includes all necessary accessories such as batteries, adapter plugs, and cables—ready to use upon arrival. 5. Wide device compatibility: Designed to work with devices featuring a 6.35mm (1/4") or 3.5mm (1/8") microphone input. Compatible with karaoke machines, mixers, jukeboxes, o amplifiers, PA systems, powered speakers, voice amplifiers, and truck speaker systems. Specifications: Name: Wireless Microphone Microphone Type: Moving coil microphone core Input Voltage: 5V Microphone Battery: 18650 lithium battery, 600mAh Receiver Battery: 18650 lithium battery, 600mAh Operating Time: Up to 3 hours Signal-to-Noise Ratio: 64dB Transmission Delay: 5ms Sensitivity: -42dB Frequency Range: 20Hz - 20kHz Transmission Distance: 15–25 meters (unobstructed) Charging Port: Type-C o Output: 6.35mm and 3.5mm jacks Compatible Devices: Computers, tablets, speakers, amplifiers, cameras, and other o devices How to Use: 1. Insert rechargeable batteries into the receiver and microphones. 2. Plug the receiver into the microphone input of your o device. 3. Turn on both the microphones and the receiver. Warm Tips Before Use: Charge the microphones and receiver for at least 3 hours before first use, as the batteries are not fully charged when shipped. Ensure both the microphones and receiver have sufficient power before operation. If connection fails, turn off both devices, then power them on again. Package Includes: 1 or 2 x UHF Wireless Microphone 1 or 2 x Anti-Slip Rings (random color) 1 or 2 x Windscreen Foam Covers 2 or 3 x 18650 Battery 1 x 6.35mm to 3.5mm Adapter 1 x Receiver