The Unidirectional Dynamic Wired Microphone is great for all types of musicians, a high quality moving coil unidirectional dynamic element makes it perfect for voice recording. The zinc alloy metal construction and steel grill keeps your equipment secure. The moving-coil dynamic element gives you a robust sound with high gain before feedback. Uni-directional microphone only picks up sounds that are directly in front it reducing or eliminating interference from instruments or speakers on stage. Features: Designed for all singing machine karaoke systems and computers Durable zinc alloy metal construction, long time using Uni-directional microphone pattern, minimize the surrounding noise Powered by it's own jack and no batteries required With on / off switch on the microphone for convenience Type: Wired Polar Pattern: Uni-directional Frequency Range: 50Hz - 15KHz Impedance: 6005% Sensitivity Range: -72dB 3dB Cable Length (cm): 150cm Package Contents: 1 x Uni-directional Wired Dynamic Microphone, 1 x Connection Cable