Enjoy enhanced bass performance, comfort and smartphone control with the DR-XB23VP XB Series Extra Bass earbuds. Powerful 9mm drivers housed in a tightly sealed acoustic design yield ultimate bass reproduction. Engineered to work with most smartphones, including iPhone, Blackberry and Android phones, these premium earbuds feature an in-line remote to control your music while the in-line microphone lets you easily take phone calls. Three sizes of hybrid silicone earbuds ensure a fine-tuned comfortable fit. A smooth flat cord significantly reduces tangles while a supplied carrying case makes it easy to take your earbuds wherever you go.