Sony MDR-EX255AP In-Ear Headphones Details Sony MDR-EX255AP are exclusively built in-ear stereo Headphones from Japanese device maker Sony. These premium quality headphones are built for exceptional performance and deliver the best audio streaming. Designed for music lovers, they offer high quality audio and come with high sensitivity 12mm drivers which offer a frequency range up to 25KHz. The music streamed through these wired headphones is so clear and pure that you can literally distinguish between every tone or beat. Other specs of the Sony MDR-EX255AP In-Ear Headphones include: tighter bass, lightweight for easy portability, 5Hz-25KHz frequency, 106dB sensitivity, 16 ohm impedance, neodymium magnet, Y-shape cord, 1.2m cord length, L-shaped gold plated mini plug, tangle free cable, inline remote with mic for hands-free calling and 4 sizes ear buds.