Yosoo 3.5mm Male to 2 Dual Female Stereo Headphone Microphone Audio Y Splitter Cable Adapter Plug Jack Cord To split out the 3.5 mm jack(like computer & mobile phone) to Mic & Earphone Red female jack is to connect your Mic while Green female jack is Earphone With this product, you can use your private microphone for Skype, Messenger, internet program...etc Compatible with PC, computer , cell phone, any audio device with 3.5 mm jack Length :19 cm /7.5 inches (end to end)