Product delivered one day before the scheduled date. Very good 3D rendering (test on a 3D bluray with following equipment: HC pioneer bcs 222 and VP BenQ W750). Immediate synchronization glasses with VP and seamless. The only flaw to my taste is wearing 3d glasses to superimpose my glasses, that's a lot to bear on the nose. in any case, do not hesitate! very good tracking of the package by the seller ensures that the glasses will be compatible with your VP exchange email.