The 3.5mm Audio Jack to Headphone Microphone Splitter by Geek Buying is a useful accessory for gamers. It has a headphone jack that connects to a microphone jack. It also has a 3.5mm cable that splits into two separate cables that connect to the headphone and microphone jacks of your devices. This 3.5mm Audio Jack to Headphone Microphone Splitter is an amazing device that splits a 3.5mm audio jack into two separate outputs for two sets of headphones. This device can be used to make sure you can listen to music in one ear and talk on the phone in the other. The 3.5mm Audio Jack to Headphone Microphone Splitter is a helpful device for those who need to share their sound with others without having to worry about being connected to their microphone. It works with any device with a 3.5mm audio jack, which means that it can be used with your phone, computer, and other devices. The splitter allows you to plug in two devices at the same time.