Apple's (AAPL 0.52%) CEO, Tim Cook, didn't shy away from voicing his opinion on Google's (GOOGL -1.97%) Glass at the All Things Digital conference this week. And his opinion was mostly negative. He thinks that it isn't very likely that there is broad appeal for the product.

But Cook expressed interest in the wearables category -- just not glasses. In particular, he seemed interested in smart watches.

In the video below, Fool contributor Daniel Sparks breaks down Cook's thoughts on Google Glass and wearables.