DescriptionThe Headphone Splitter works with any device that has a 3.5mm port, including MP3 players, CD players, and portable DVD players. Other compatible devices include iPhones, iPod, iPads, smartphones, media players, tablets, MacBooks, ultrabooks, and laptop.Features- Color: Random Color. - Material: Plastic. - Size: 5 x 3 x 0.6cm / 2 x 1.2 x 0.2inch(LxWxH). - Fit for all 3.5mm audio devices:Compatible with iPhone, iPod, Samsung, Blackberry, Tablets, mp3, laptops. - The Headphone Splitter works with any device that has a 3.5mm port, including MP3 players, CD players, and portable DVD players. Other compatible devices include iPhones, iPod, iPads, smartphones, media players, tablets, MacBooks, ultrabooks, and laptop. - Audio video accessories offer a variety of ways to install, expand, and upgrade stereo and home theater systems. This Speaker and Headphone Splitter connects two mini-stereo headphones or speakers to the same jack on your mobile digital device, portable cassette or CD player. - Note: Apple iPhone use can be real-time monitoring, other such as mobile phone can only recording, not the voice of the real-time monitoring. When use must first insert the headset and microphone on the transfer line, and then put on the mobile phone's headphone jack tieline can be normal use. - The distance between the microphone and mouth finally keep best at about 15cm, sound quality is good or bad depends on the use of the quality of the microphones and headphones, nothing to do with this transformation line (phone original don't use headphones with a microphone).