GranVela Mice E300A in-Ear Stereo Heavy Bass Headphones, Tangle-Free Triangle Cable and Noise-Isolating Earbuds - Earphones with Mic (White) Conforms to the IEC (International Electrotechnical Commission) Standards, good quality proved by hundreds of music fans. Innovative Bell Shape is simple and elegant, comfortable to wear, patent designed triangle cable for tangle-free. High-quality Sound reproduced by 9mm high-performance CCAW drive unit and diaphragm technology. Enhanced bass ensured by powerful Neodymium Magnet, suitable for all kinds of music style-Pop, Rock,Country and Others. Package contents: E300 Earphones, Silicone earbuds * 3 pairs, Headphone storage bag * 1, instruction manual. 12-month warranty and free lifetime technical support.