This is a microphone, which is made of high grade materials, durable and can be used for a long time. Anti-noise filtering technology provides clearer texture and high-fidelity, very practical. The microphone's body is strong and durable. The microphone has and can support long time use. Features -Color: As shown -Material: Iron, ABS -Size: About 17.00X5.50X5.50cm/6.68X2.16X2.16in -Type: 58A -Input voltage: 5V -Built-in battery capacity: 300-500MAH -Signal to Noise Ratio: >=70db -Frequency response: 50HZ-16KHZ -Sensitivity: -55db±3db(0db=1V/pa at 1KHZ) -Output impedance: 400±30%(at 1KHZ) -The microphone is made of , with excellent texture, durability and stability. -Excellent workmanship can make the microphone have a wide frequency response range, and the noise is smaller. -Anti-noise filtering technology provides clearer texture and high-fidelity, very practical. -Applicable to various occasions: home entertainment, outdoor entertainment, conference office, education. -With high definition digital display screen, you can clearly and intuitively see the microphone frequency band, power, signal and other functions. Package list: 1 x microphone 1 x plug wire