Unfortunately, there are three versions...
Pro 82 v1 sold out around two years ago.
Pro 82 v2 has been produced since then, and features improved drivers with reduced treble peaks.
Both these versions are excellent, but there is also "v0.9" - featuring Pro 82 v1 drivers, but these are either rejects of Takstar's quality assurance, or a result of a "night shift" production - when a factory makes unauthorized products that Takstar doesn't know about.
They usually come with 2.2m cable (v2 has 1.6m cable), but I see no reason why they can't come with a shorter cable.
The easiest way to identify them - unrealistically low price.
Takstar is very strict with their resellers' pricing - they typically don't allow prices more than a few $ lower than the recommended ones.
You can see the recommended prices in the TakstarOfficial store - currently 65$ for Pro 82.
Some sellers are selling Pro 82 for much lower prices (typically around 50$) - that shows that they are not getting their product officially from Takstar.
These sellers should be avoided, no matter what they tell you.
You should try one of the synergy combos:
https://www.head-fi.org/threads/tak...discussion-thread.849965/page-5#post-13501419