KabelDirekt Headset Audio Stereo Connector Male to 3.5mm Female Adapter Cable &ndash; PRO Series For bumpers, battery-wrappings and other equipment, which causes difficulties in 3.5mm-input plugging. The 4-pin supports stereo sound and headset features such as next, pause and play and mic-tone Excellent processing and high-quality material (multiple shielding, gold plated contacts, break-prevention) Small and handy (please consider measurements given in the picture) 18 month warranty