Features 1.Noise Filtering: Professional dynamic microphone core, special added sound filter cotton canister to filter out the noise, so that the sound output more clear. 2.Stable Signal: Dynamic microphone signal transmission is stable and interference free, and the effective receiving distance is up to Approx. 50meter/164ft. 3.Automatic Connection: Mini portable receiver, automatic connection to the microphone when open, easy to use. 4.Plug and Play: Rechargeable microphone wireless is suitable for most 6.5mm and 3.5mm voice frequency devices, plug and play, very convenient. 5.Metal Mesh Head: Karaoke mic adopts metal mesh head, which can better defend the microphone core from damage. specificationItem Type: Wireless Dynamic Microphone_x000D_ Material: ABS_x000D_ Modulation: Fixed Frequency_x000D_ Frequency Range: 700 to 800MHz_x000D_ Preset Frequency: Auto Pairing_x000D_ Frequency Response: 50Hz to 15khz_x000D_ Maximum Frequency Deviation: 50KHz (With Level Limit)_x000D_ Distortion:0.01%_x000D_ Signal to Noise Ratio:98DB_x000D_ Effective Reception Range: Approx. 50meter / 164ft_x000D_ RF Carrier Stability:+0.005%(-10C to 50C)_x000D_ Battery Type: Lithium Battery_x000D_ Receiver Battery Type: 1x18650 Battery (Not Included)_x000D_ Handheld Microphone Battery Type: 1x18650 Battery (Not Included)_x000D_ Microphone Carrier Frequency Power: 30mW PackageList 2 x Microphone 1 x Receiver 1 x User Manual 2 x Anti Slip Cover 1 x 3.5mm to 6.5mm Connector 1 x Charging Cable NoteBattery Not Included