Features：<br> 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.<br> <br> 2. 1200mAh battery for extra long usage time: 3 rechargeable replaceable 18650 batteries, no need to buy batteries, 10 hours of work with a full charge within 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.<br> <br> 3. Signal stability: The high-sensitivity professional dynamic microphone extends the working range to 160ft (50m), which solves the problem of tangled wires. UHF wireless microphone with built-in cardioid pickup pattern provides a clearer signal and better sound quality, reducing the chance of interference and dropped calls.<br> <br> 4. Plug and Play: Just plug the receiver into the MIC jack, and the receiver will automatically sync its frequency with the microphone, batteries, adapter plugs/cables, and other accessories that are included in the package and ready to use when you receive it.<br> <br> 5. Compatible with a wide variety of devices: The microphone is designed to work with devices that have a 6.35mm (1/4") or 3.5mm (1/8") MIC input. Suitable for karaoke machines, mixers, jukeboxes, audio amplifiers, PA systems, powered speakers, voice amplifiers, truck speaker systems<br> <br> Specification:<br> Name: wireless microphone<br> Microphone: moving coil microphone core <br> Input voltage: 5V <br> Microphone 18650 lithium battery: 600MAH <br> Receiver 18650 lithium battery: 600MAH <br> Endurance: 3 hours <br> Signal-to-noise ratio: 64DBM <br> Transmission Delay: 5MS <br> Sensitivity: -42DB <br> Frequency range: 20-20KHZ <br> Transmission distance: 15--25 meters without obstacles<br> Type-c charging jack, audio input DC6.35mm DC3.5mm computers, tablets, speakers, amplifiers, cameras and other devices<br> <br> How to Use:<br> 1. Put rechargeable batteries in the receiver and microphones.<br> <br> 2. Plug the receiver into the MIC input of your audio device.<br> <br> 3. Turn on the microphones and the receiver.<br> <br> Warm Tips Before Use:<br> Charge the microphones and receiver over 3 hours before you begin your first use because their batteries were not fully charged when they were packed.<br> <br> Make sure the microphones and receiver have enough power before using them.<br> <br> If fail to connect, please Turn off the microphones and receiver, then turn them on again<br> <br> Package Includes:<br> 1/2* UHF Wireless Microphone<br> 1/2* Anti-Slip Rings（random colour）<br> 1/2* blowout preventer<br> 2/3* 18560 battery<br> 1* 6.35mm to 3.5mm Adapter<br> 1* Receiver