Dave,
on your video, I only have to criticize only your "quivering" exercise.
You have to get your butt much lower to do it effectively.
My old basketball trainer would have punished me for that kind of execution.
Or do you still have problems to do deep knee bends, after your surgery?
Concerning this gimmick watch, I agree.
That design and product is over-engineered, overpriced, and completely inefficient, for all these three categories in relation to the supposed 'saving of earth's resources'.
What me disturbed most, was the advertising of saving energy (big energy plants!!) and to avoid waste of tons of big (!) batteries.
The inventors of such products all seem not to able to make proper calculations of energy and resource in/out balances.
In this sense, that's another completely useless product.
Frank