Enjoy your favorite music while exercising, traveling, dancing, or skating with excellent clarity using the Sony MDR-EX51LP headphones. These Sony Fontopia headphones have a soft and silicon ear buds, which reduces outside noise and delivers amazing audio output with powerful resonant bass. These Sony in-ear headphones fits comfortably and lets you enjoy music for longer hours without pinching your ears. The oxygen-free copper cord of the Sony MDR-EX51LP headphones improves the signal transmission and maintains low noise. The new super-small 9 mm drivers of these Sony in-ear headphones produce powerful and rocking sound. The gold-plated mini-plug of these Sony in-ear headphones provides excellent conductivity, great corrosion resistance and low noise.