["Description:\nbrand new and high quality\nFeature:\nEliminating Buzzing Noise caused by ground loops in some car speakers / home stereo systems.\nNo external power supply, this noise isolator can achieve a clear speech/music by eliminating the current noise in some car speakers / home stereo systems.\nWorks with any portable device that has 3.5mm audio jacks, for your Car Audio System/Home Stereo.\nCompact and lightweight, it will not take much space and can be easily taken away.\n\nSpecifications:\n\nItem type: Ground Loop Noise Isolator\n\nAudio Interface: 3.5mm\n\nFrequency response: 20HZ-20KHZ\n\nAudio input: stereo\n\nSize: 59X20X18mm\t\n\nNote:\n\n1-3mm error might exist due to manual measurements, please kindly understand.\n\nThe colors deviation might differ due to different monitor settings.\n\nWe provide you with the best product and service, if you have any problem, please let us know, and we will solve the problem ASAP. Thank you so much.\n\nPackage includes:\n\n1 x Ground Loop Noise Isolator\n\n1 x Audio Cable"]