Can't say, but I can tell you that I bought six cheapie Ultraclears, hearing that they were pretty good overall. Just to test, I bought a pair of Optoma ZD201 glasses and compared them. In short, there is no comparison; the Optomas made the 3D so much more watchable. Zero flicker, better color, brighter. Just better in every way. Don't cheap out, get good ones. I have an Optoma projector, fwiw. Best of luck.
Video: Optoma HD3300, Panamorph UH480, Darbee Darblet, Samsung BD D6700 Blu Ray player, DIY Seymour Centerstage XD 138" Curved Screen
LCR - Tannoy DC12i, Sides - Tannoy IW63, Rears - Tannoy Saturn DC6ti Bookshelf, Ceilings - Tannoy CMS 603DC (TF), Tannoy CMS 601DC (TR), 3 Micro Marty/1 Full Marty DIY subs
Amplification: Emotiva XPA-3, Emotiva XPA-2, Outlaw Audio 7700, 2x Inuke 6000DSP
Receiver: Anthem MRX 720