Comfortable and Snug Fit Soft, flexible and lightweight, Strings earphones let you listen in comfort, anytime, anywhere. Sweat-proof and durable Strings care how much you workout or drenching in sweat, it always will be sweat proof and durable ,making it not a messy affair. In-Built Mic Strings In-built cable allow you to answer calls from your smartphone or to use voice commands without removing your headphones and make it easy for everyday use.