With the Koss SparkPlug W - White set yourself on a path towards clear sound, with high fidelity Koss Sparkplug in-ear headphones. They make a great sound choice for listeners who like their music wherever they go. The Sparkplug\'s slow memory, soft foam ear cushions - made from hydrophilic, formed urethane - offer a custom fit with every listen. These Koss in-ear headphones seal out ambient noise while delivering enhanced bass and clarity. Combined with your favorite music, the Koss Sparkplug in-ear headphones are the ultimate on-the-go accessory. Specifications 10-20,000 Hz 16 ohms 112dB SPL/1mW Straight, Dual Entry, 4ft Limited Lifetime Warranty