Audiosharp AS1318 Noise Isolating Ear Hook Design In Ear Headphones High performance 8.2 mm driver units made out of Oxygen-Free Copper for excellent sound quality. Outstanding Noise Isolation, Perfectly comfortable, custom fit with High end Memory Foam Ear Tips. Ear-hook design and non-slip fit, provide secure music lisening even when you engage in sports. Tuned carefully by top engineers, sound more real, the bass is elastic. 1 Year Warranty. The AS1318 has been designed and engineered to deliver the highest standard of build and audio quality, that is why it is covered by a comprehensive Audiosharp's warranty for one year.