Good buy - poor service

First return to hot (use on w1070):
- Lightweight glasses, no discomfort when worn
- No "drop" any incident when viewing
- By cons on the left and bottom of the bezel (uphill head so) far colder tones, conversely from the right and upper tones are warmer. This is significant enough to be considered I think. Besides, if you have two personal screen in a dialog (seen personal profiles) can be the difference between the colorimetric 2 subjects.
Overall we are satisfied. At 65 euros for 2 pairs I expected no less!

Edit: One of the two pairs of glasses broke down after only two uses.
I had to return to standard exchange. The costs of returns and expulsions were in my care.
Either 5th original delivery plus 7th back, pus 5.50e of fees returns.
In my comments the seller has remained silent, no commercial gesture when the fault occurred very quickly, and this is certainly due to a manufacturing defect.
My service experience is poor with the seller and raised the price in no small way.
A word