Lysignal Sports Glowing Stereo Headphones EL in-Ear Earphones with Mic and Remote Control for 3.5mm Audio Enabled Devices [Functionality] Built-in microphone for hands-free calls, with remote control to work on Apple and Android devices (Song Selection/Pause/Play, NO Volume Control). [Cool and fashion] Stylish flashing earphone,cool in any oudtdoor sports,make you more visible in night. [Comfort] Comfortable round shape in-ear design, offer gently feeling.Noise-Isolating, fit into ears perfectly. [New Design] In-built with low power glowing optical fiber, powered by a built-in lithium battery, perfect for use at night - running, biking, shows, party and more. [USB charging]: The light of earphone is powered by built-in rechargeable battery instead of by your cellphone, charge it easily with the usb cable come along with the earphone