Flatworld &reg; Visible Flowing LED Flashing Lights In-ear Headphone Earphones with Microphone, Sync Your Music Beats, Answer / End Your Calls (Blue) Upgraded EL Flow cord, most beautiful ever. HiFi Microphone makes your phone call hands-free Earphone cord is 100 cm, make it more practical Compatible with all 3.5 mm stereo jack devices (such as apple, Samsung, HTC etc) Press for 3 seconds the center button and the lights will start performing awesome sound and bass High fidelity stereo speakers, lighting intelligent control