Earphones, GranVela A990BL Classic Premium Earbuds With Microphones In-Ear Stereo Headphones | Earphone - Made for iPhone | iPod | iPad | Android Smartphone | Tablets | MP3 Players - Black Ergonomic construction, the use of soft PVC material, wear very comfortable, will not easily fall for strenuous exercise use. Sound insulation class One-touch call microphone on high quality TPE wire binding microphones, you have can answer, switch songs up and down, fast forward / rewind, pause / play and call functions Full metal cavity, high quality metal filters, dust-proof design, the use of aluminum production ears, long wear no heat excellence, off sets of silicone earphone visible protection unit nets to protect the unit does not enter impurities Thin diaphragm, senior tuner to pick the latest 10MM diameter precision sound unit, let the sound output stable and vigorous. Thin diaphragm and neodymium style headset surging driven core Gold-plated plug, 3.5MM plug for the three-line type design, suitable for any smartphones, 24K gold plating process designed to ensure signal transmission without distortion, the sound quality is more pure transparent, plug more resistant to wear