The Unidirectional Dynamic Wired Microphone is great for all types of musicians｣ｬ 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. <br /><br />Features:<br />-Designed for all singing machine karaoke systems and computers<br />-Durable zinc alloy metal construction｣ｬ long time using<br />-Uni-directional microphone pattern｣ｬ minimize the surrounding noise<br />-Powered by it's own jack and no batteries required<br />-With on / off switch on the microphone for convenience<br /><br /><br />Type: Wired <br />Polar Pattern: Uni-directional <br />Frequency Range: 50Hz - 15KHz <br />Sensitivity Range: -72dB   3dB <br />Impedance: 600  5% <br />Cable Length (cm): 150cm <br />Package weight: 0.182 kg <br />Product size (L x W x H): 16.50 x 3.50 x 2.10 cm / 6.5 x 1.38 x 0.83 inches <br />Package size (L x W x H): 18.00 x 5.00 x 3.50 cm / 7.09 x 1.97 x 1.38 inches <br /><br />Package Contents: <br />1 x Uni-directional Wired Dynamic Microphone｣ｬ 1 x Connection Cable