So the surgery lasted about two hours. We used a 7000 mAh battery pack, since without external battery Glass would make it about 25-30 minutes in the Hangout before going dark.

The resolution was good enough for the remote proctor to assist. We did notice that as the device got warm as the surgery progressed, quality seemed to decrease a little. Overall I think we were really pleased though with the reliability and quality; we didn't experience any drops, or much packet loss or jitter.

I would say the biggest hurdle was audio. Because the version of Glass we used relied on bone conduction and didn't have an available earpiece, it made it pretty difficult at times for the surgeon to hear his remote proctor, especially since there was a lot of sawing and suction going on.