50 foot extension cable 3.5mm (1/8") stereo male to 3.5mm (1/8") stereo female cable For use with most computer speakers, headphones, headsets, microphones, boom boxes and other portable audio devices Compatible only with headphones that do not feature a microphone and / or controls in the cord ROHS compliant With over a decade of experience the YCS Basics brand is dedicated to bringing quality consumer electronics products to our customers at an affordable price.