Basically the pretty pink cover (they also come in black if pink is too much for you) encloses this tweezer (right) that illuminates (very brightly too) when you press on that little round button there.
And the light is no feeble light too. Its designed just perfect for tweezing one's eyebrow, although do watch where you are waving it less you blind yourself with it. Ooooh and on the inside of the pink cover, there is even a tiny mirror for you to use. Isn't that so clever? Its so compact you can now practically tweezer your eyebrow anytime and anywhere you want!