Cellet Universal Headset Adapter w/ Double 3.5mm Holes - Black Instead of being restricted to one listener per electronic device, the split adapter permits two listeners for every device. You no longer have to share headphones with your friend to simultaneously listen to the same music off one electronic device! The split adapter has compatibility with any audio device or headphones designed to fit a standard 3.5 mm audiojack. The device has endless types of uses. Buy it to find out more. Cellet Universal Headset Adapter w/ Double 3.5mm Holes - Black FEATURES 3.5mm Headset Split Adapter allows 2 sets of 3.5mm speakers or headphones to be connected to a single 3.5mm stereo jack Listen to music with a friend Plug and play installation Works with audio devices and headphones which use standard 3.5mm audio jacks Color: Black Cellet Universal Headset Adapter w/ Double 3.5mm Holes - Black