Easy-to-use, hands-free control for your iPod. No set up—just clip it onto your clothing (also includes adjustable neck strap) and tell it what to do: adjust volume, play, stop or previous track. Great for home, exercise, and auto with an iPhone port; can also use with home speakers that connect via the headphone jack. Easily learns accents and languages. 1 1/2" sq. x 1" d.