The Apple Watch is a first for technology and a blueprint for the future of technology. It will be the advent of human wearable computing which has the ability to always be with you, which will eventually lead to embedded technology in humans that opens the door to unlimited possibilities.
This will enable other technologies to progress, such as Nano Bots, direct nerve interfaces, artificial limbs, etc.
This gives Apple the ground floor for development of these technologies.
Apple has been a trail blazer for new applications for our technology of today. Apple is very good at it!