Transformers : What were the glasses for?

What were the glasses for?

I know what they were supposed to be for. They were supposed be etched or somehow marked with the coordinates to Megatron or the cube in the arctic. I think. I must have missed something because the Autobots used the glasses to track down the cube to the Hoover Dam. Somehow the coordinates updated. The first half of the movie is about getting those glasses.

Re: What were the glasses for?

You actually watch Transformers films?

You own a Transformers film?

More than one?