I would rather spend 800 bucks on a better watch then something that is supposed to make you feel good because you are "saving the planet", which is a sort of misnomer as they never seem to account manufacturing cost in both energy, materials, etc.
Call me jaded, but this sort of thing reminds me of those clear cleaning liquids of the late 90s that were supposed to be more environmentally safe to use, but really weren’t, as they could charge you more for leaving the colouring out of the product.