I did buy these unbranded direct from a chinese seller .. and they are back with him for a refund ..
Utterly useless to have a rich 3D experience, my observations were:
- too green tinted, all the white scenes were greenish!
- not enough contrast, all blacks were greyish in appearance
- transmittance, too high, in 3D mode the projector is already in bright mode, these glasses were letting too much light through making it too bright. If i turn the brightness down, the original 3D glasses would become too dark. It still didn't fix the problem that everything black was appearing grey.
- Occasional unsync, but that is really angle/movement dependent
Anyways, i prefer the grey tint as my projected image is not pinkish .. so i don't need everything to be green!