Audio-Technica SonicFuel Over-Ear Headphones for Smartphones, Black PREMIUM SOUND: The oversized 40mm drivers deliver crystal clear sound quality and premium bass performance. DESIGNED FOR COMFORT: The generously cushioned ear pads and headband offer maximum comfort throughout even your longest listening session. SMARTPHONE OPTIMIZED: Answer calls, change tracks and control your volume from the universal in-line remote and microphone. DURABLE, PORTABLE: The SonicFuel headphones were specifically engineered for active daily use with a durable ABS construction and aluminum accents. The fold-flat design ensures easy storage in the included carrying case.