Identify Fake or Authentic Oakley RAZRwires maybe tricky, first off, if its all black, its definitely fake because it is not even a color choice at Oakley.com...If you do recieve a fake RAZRwire you will see that the frame is very flimsy, the bluetooth module moves very smoothly, and if it doesnt say RAZRwire on the inside of the frame..but besides those things, thats the only way to Identify fake Oakley RAZRwires...The authentic ones on the other hand come in the following colors

If you see a different color, then dont get it, the authentic ones say RAZRwire in the inside, have a comfortable fit, no bendable frames, and module has better reception, tone, and movement to place it in your ear...