You guys did good on the first one. Let's see how you do on one that is a bit harder.
Karen is on the right track, but is still a little off. Here's another hint:
Laura nailed this one right on the head (I would have given credit to D.A.D. too, but I happen to know that he only got the answer after I had told him that Laura got it right). Here is what the earbud looks like zoomed out a little.