Features 1.DYNAMIC MICROPHONE CORE: Microphone adopts professional dynamic microphone core, restore the human voice, filter environmental noise, sound friendly. 2.ERGONOMIC DESIGN: Microphone adopts ergonomic design, comfortable hand feeling, let you enjoy the free of the wireless 3.AUTOMATIC FREQUENCY MATCHING: Portable handheld mic speaker is simple to operate, automatic frequency matching, fast and convenient, easy to change the frequency. 4.HIGH FREQUENCY RESPONSE: Wireless handheld microphone high frequency response range, allowing you to hear richer sound details. 5.ALUMINUM ALLOY MATERIAL: Powered by battery, easy to replace the battery, aluminum alloy material, not easy to damage, can be used for a long time. specificationItem Type: Wireless Microphone Material: Aluminum Alloy Microphone Parameters: Frequency Range: 610MHz to 675MHz Modulation System: DQPSK Frequency Response: 60Hz to 16KHZ Transmit Power: 10dBm Battery Type: 3V Operating Current: 100mA Microphone Battery: AA Battery Two (Battery Not Included) Receiver: Frequency Range: 610MHz to 675MHz Receiving Sensitivity: -94dBm Battery Type: 3V Operating Current: 100mA Receiver Battery: AAA Battery Two (Battery Not Included) PackageList1 x WirelessMicrophone(Battery Not Included) 1 x User Manual 1 x Anti Slip Sleeve 1 x 3.5mm Adaptor 1 x Receiver (Battery Not Included)