Autonomy is good and charging via USB is simple (note the small micro USB cable is included but not the charger, a simple computer is enough). Compatibility with my projector BENQ W1070 is perfect thanks to frame reverse button, which also serves to turn on and off the glasses.
I did not test other more expensive models, so I do not know if this phenomenon is common, but I noticed that the shutter is perfect in the center of the visual field but not on the edges, produces a ghost effect which is a bit tiring out. After a short adaptation time, the show is still largely up to what I expected from these glasses.
And above all, the small price allowed me to buy five pairs at once to equip the whole family!
