Singing Machine SMM-205 Unidirectional Dynamic Microphone with 10 Ft. Cord No Batteries required Karaoke Accessory Uni-directional Dynamic Microphone Wide Frequency Response & High Sensitivity NOTE: While using the product, please make sure that the music playing machine is properly on and the input jacks work correctly. Microphone's wire should be properly fitted to the machine so that there is no disturbance or issues. Also ensure that the that the power is on.