Matters need attention:Please make sure the plugs are inserted in the headset jack all the way,come with 2 pcs Audio splitter 2 pcs and Hard-wired auxiliary ( Cable length: 20 CM ). Wide application: Ideal for a family trip or school group course, it allowed we can both listen or watch the same movie,music or games at the same time, while not bothering the others. Multifunction: Compatible with iPhone,iPod,iPad,Samsung,Blackberry,Tablets,mp3,laptops or other portable DVD players. Easy to use: Simply plug the splitter into any device with a 3.5mm auxiliary port, connect up to five headphones to one device for sharing music without being noisy in any places,each port can be output end or input end, mixing and fade-ins controlled. Lightweight and durable : Earphone splitter is made of ABS plastic material,with compact portable size, just hang it on the bag or put in the pocket.