Sony MDR-XB50AP Earbud Headphones - Black [Open Box - New] ---- Earbud design With hybrid silicone earbuds in extra small, small, medium and large sizes ensures a custom fit for lasting comfort. 12mm dome-type drivers Along with high-energy neodymium magnets create rich, powerful bass tones. Bass duct design Offers a high level of sound isolation for immersive audio with extended bass response. 100 mW (IEC) power handling Stands up to extreme output levels. Integrated condenser/omnidirectional microphone Allows clear hands-free communication. Multifunction control button Lets you manage functions on your compatible cell phone. A Smart Key app (download required) allows you to control your compatible Android phone. 3.9' flat cord Resists tangles to permit neat storage. Gold-plated, 4-conductor, L-shape stereo mini plug Enables you to connect a wide range of devices. 4Hz - 24kHz frequency response Delivers faithful sound reproduction.