Stereo Bass Sound & Noise Isolating : Marsno M1 is brilliantly engineered with high quality dynamic drivers that pump out powerful deep bass and balanced crisp highs, creates an exciting and fun listening experience. Advanced Driver casings are designed and made with solid sound-insulating material, reducing external noise while minimizing sound leakage.You can enjoy the real life of the music. ALUMINIUM ALLOY HOUSING - Marsno M1 has a full aluminium alloy housing which is forged by over 20 processes that is more corrosion-resistant, anti-aging and more durable than traditional metal headphones;oxygen-free copper wiring blocks interference for better-sounding audio. The compact light weight design make it the perfect choice when exercising, traveling, or enjoying music during your daily Durable Cord: The hollow TPE cord with durable oxygen-free copper wire inserted by hand, this process produces a more durable and longer lasting cord. The 3.5mm gold plated jack on the end for reliable connectivity.