These ONN Ear Clip Headphones utilize an original and unique design that ensures the proper fit. Using a new in-ear ported design, the elements rest comfortably to create the ideal seal for an ultimate listening experience. These stereo in-ear headphones offer an in-line one-touch microphone that allows you to make and receive calls when they are connected to a cellular device. They come with three sizes of cushions to find the best individual fit. Soft and flexible clips rest comfortably around the outside of the ear. The ONN headphones also have a water-resistant coating for active use and unmatched durability. The design is lightweight and comfortable to wear while exercising. A built-in 3.5mm audio input can connect to a phone, mp3 player or stereo system.