Split your 4-pole TRRS input jack (combined audio jack) into separate jacks one for microphone and one for stereo headphones
This compact adapter allows you to plug your headphones and various types of microphones into your iPhone or similar device that uses 4-pole TRRS connector at the same time. It includes a convenient volume adjuster for your 3.5 mm (1/8 inch) stereo headphones.
– Allows you to plug set of headphones and microphone (at the same time) into your Apple iPhone, iPod Touch, Blackberry, Motorola Droid, HTC phones; Lenovo T410, T410s, T510, X, & Edge computers Making it simple to connect high-quality microphone (and headphones) to your device for professional quality recordings and clear communication– 1 year warranty
– Compatible with any headphones equipped with standard 3.5 mm (1/8) plug
– Compatible with mono microphone on these pages: Mono microphones Computer microphones
Motorola Droids, HTC phones and Apple iPhone, ipod, phone, pod, palm, treo