This product states that it can work with all 60Hz displays. This on its face cannot be true, because many 60Hz displays are not frame-locked to the source. That is, the internal clock is not connected to the HDMI input, and it essentially free runs. This doesn't cause noticeable issues in 2D due to the fact that the internal clock is set very close to the source's, but it is still not the same. Since the glasses use a sync derived from the external box, that sync will not always be synchronized with the image on your screen. What's worse is that it will drift over time, by as much as one frame. This means the worst case drift would cause your left eye and right eye to be backwards, and it cannot be compensated for because it is continually drifting.
I suggest that the manufacturer publish a list of known frame-locked displays to head off this issue as these boxes get out to users.