No idea just by looking at the picture. I only checked after I had them in my possession. Risky? Yes it was, but for $30 I didn't mind too much.
The only way to be perfectly sure before buy is if the product is coming from an authorized dealer:
Here's the list of USA online dealers.
If you do by them, this is how you tell:
http://anythingbutipod.com/forum/showthread.php?t=8392