Review on 🎧 High-Quality Audio Extension Cable x 2 - 6ft (2m) TRRS Male to TRRS Female Stereo Microphone Extender for Smartphone, iPhone, Samsung, Headphones, Speakers, Tablet by David Pearson

I have cut and stripped the cable and examined the conductors. Inside the outer jacket there are four strands in the colors red, green, blue and transparent (copper) as well as a strain relief cable. The cable simply contains no shielding. The seller claims it is "Double Screen Design". This usually means a braided copper screen surrounded by a foil screen. Because the seller made false claims about the cable, I gave it one star. If you don't use the microphone function, you shouldn't have any problems, since the cable otherwise seems to be well made.