Item Type: Wireless MicrophoneMaterial: Aluminum AlloyMicrophone Parameters:Frequency Range: 610MHz to 675MHzModulation System: DQPSKFrequency Response: 60Hz to 16KHZTransmit Power: 10dBmBattery Type: 3VOperating Current: 100mAMicrophone Battery: AA Battery Two (Battery Not Included)Receiver:Frequency Range: 610MHz to 675MHzReceiving Sensitivity: -94dBmBattery Type: 3VOperating Current: 100mAReceiver Battery: AAA Battery Two (Battery Not Included) 1DYNAMIC MICROPHONE CORE: Microphone adopts professional dynamic microphone core, restore the human voice, filter environmental noise, sound friendly. 2ERGONOMIC DESIGN: Microphone adopts ergonomic design, comfortable hand feeling, let you enjoy the free of the wireless 3AUTOMATIC FREQUENCY MATCHING: Portable handheld mic speaker is simple to operate, automatic frequency matching, fast and convenient, easy to change the frequency. 4HIGH FREQUENCY RESPONSE: Wireless handheld microphone high frequency response range, allowing you to hear richer sound details. 5ALUMINUM ALLOY MATERIAL: Powered by battery, easy to replace the battery, aluminum alloy material, not easy to damage, can be used for a long time.1 xWirelessMicrophone(Battery Not Included) 1 x User Manual 1 x Anti Slip Sleeve 1 x 3.5mm Adaptor 1 x Receiver (Battery Not Included)