I recently purchased Jaybird X2 from Amazon twice. One was fake and one was real.
There are subtle differences between the two. The fake looks pretty convincing otherwise, unless you know what to look for. Sound quality-wise, the Real one is definitely better. The Fake one had a high pitched noise present when idle and channel imbalance. The Bass with the Fake was also boomier and sloppier compared to the Real ones.
Here are pics to show the difference between Fake and Real. The audio prompts are different as well, check out this other person's video to hear the difference. https://www.youtube.com/watch?v=9RHRrVgTy-8

The filter is stuck on the end of the Ear Tip Bore with the Fake. The real one is recessed and inside the Ear Tip Bore.

On the cable towards the Left Side (opposite of the Controller) the Real one starts with "X2 FCC ID:XX8-BBX1" in smaller font. The Fake does Not start with "X2".

The Fake micro USB Charging port is not as recessed as the Real one and is also flipped 180 degrees. The plastic is more shiny and textured on the Real one near the charge port.
TL;DR, try to buy from Amazon as the seller, and not "Fullfilled by Amazon". Otherwise, I hope these pics help out those out shopping deals that may end up as scams.
-Ed
There are subtle differences between the two. The fake looks pretty convincing otherwise, unless you know what to look for. Sound quality-wise, the Real one is definitely better. The Fake one had a high pitched noise present when idle and channel imbalance. The Bass with the Fake was also boomier and sloppier compared to the Real ones.
Here are pics to show the difference between Fake and Real. The audio prompts are different as well, check out this other person's video to hear the difference. https://www.youtube.com/watch?v=9RHRrVgTy-8
The filter is stuck on the end of the Ear Tip Bore with the Fake. The real one is recessed and inside the Ear Tip Bore.
On the cable towards the Left Side (opposite of the Controller) the Real one starts with "X2 FCC ID:XX8-BBX1" in smaller font. The Fake does Not start with "X2".
The Fake micro USB Charging port is not as recessed as the Real one and is also flipped 180 degrees. The plastic is more shiny and textured on the Real one near the charge port.
TL;DR, try to buy from Amazon as the seller, and not "Fullfilled by Amazon". Otherwise, I hope these pics help out those out shopping deals that may end up as scams.
-Ed