"Audio Adaptor Sennheiser 1male*3.5 mm 4-pin jack to 2 female*3.5 mm 3-pin jack stereo+mic, PCV 05 - http://en-de.sennheiser.com/pcv-05"
Audio Adaptor Sennheiser 1male*3.5 mm 4-pin jack to 2 female*3.5 mm 3-pin jack stereo+mic, PCV 05 - http://en-de.sennheiser.com/pcv-05