Tera Grand RETA-WV02B Retractable In-Ear Stereo Headphone, 4' - New & Improved 2017 Model High Quality Sound, Great Highs and Lows Comes with Ultra Thin and Soft Ear Piece - Rest Comfortably in your Ears Compact and Lightweight Design Compatible with all Cellular Phones, MP3 Players and Other Devices with 3.5mm Earphone Jack In-Ear fit, Extends to 4 Ft. Connectivity technology : Wired