Operation of these active 3D glasses is simple, pair with the TV and they sync with the 3D display very quickly. I found them to be stable, very light for active glasses which produce an effective 3D display. switching on the glasses requires one push of the switch on the top of the glasses, you see the led light green for a short period of time, if not the glasses need re-pairing which requires the switch to be held down close to the TV until the TV reports that pairing is complete, the TV display also reports the condition of the 3D glasses battery. To switch the glasses off, which is recommended to preserve battery life requires one push of the switch the led lights up red for a short period of time. The glasses stems don't fold and give the impression of being very flimsy. For me one major draw-back is light bleeding from the sides of the glasses, wider stems would have prevented this, so it's advisable to watch 3D content in a darkened room.