Earphones, SmartSpeed K38 In-Ear Headphones Sports Earbuds with Microphone Stereo Earphones for Running Black --Compatible-- All Apple Devices, Androids & Windows Phones, MP3/MP4 Players, Speakers and all other 3.5mm jack devices. --Comfortable-- This lightweight in-ear earbuds fit snugly and gently in your ears, long-lasting comfort (An extra pair of smaller sized earbuds included). --Super sound-- 9 mm high performance copper sound environment & 5 microns thin diaphragm offering better voice resolution & noise Isolating effect. --Convenient-- In-line control, perfect for hands-free calling, music streaming, waking Siri video watching or gaming. --Stay Firmly-- Little silicone loops keep the earbuds fixed in the ears gently and safely, perfect for daily training or high-intensity sports.