I would not invest in this product, person or company.
Here's why...
First, everything is renderings - they have nothing to show. How do they know the watch will be 6.5mm thin + 2.9mm bulge in the center? They could only know that if they have already made one and worked out the bugs. But if they have already made one, why not show it?
Second, we do all our own metalworking in our manufacturing facility here. I work with titanium extensively and I buy a lot of it. He claims the watch will be made from Ti and shows pictures of it being machined. Well, Ti is expensive. I bet I get a lot better price than he does on it, and without doing much calculation, there is a not-insignificant cost just in the titanium. And it will need either cast, formed or machined. Casting and forming require large up-front costs in tooling. Machining does not. Off the cuff, if someone came to me and wanted those cases machined, they would be looking at maybe $80-100USD easily, probably more.
Third, there are all sorts of other add-ons to the above... an embedded mini-stylus, buttons, ports for a camera/flash, etc? All those tiny parts add a ton to the cost.
Fourth, I simply do not believe he can fit an LCD, PCB with MCU/memory, Wifi+Bluetooth+NFC+USB modules/ports, camera+flash, speaker and all the rest into a housing that small. Absolutely no way in hell. Not to mention audio jack, inductive charging pickup, microphone, etc, etc. I would be shocked if Samsung came out with a product of this size and those specs... let alone an independent with no discernible prior experience.
Fifth, I looked at their company registration and Orsto was formed just this year and registered to a "business park" in Durham (not the one shown on their website). Google Maps shows a row of roll-up garage doors, looking more like a run-down self-storage area. And that unit (#20) is registered to some garage door company. His Orsto website shows another business location that appears to be one of those "rent a meeting room for a day" type places with managed offices (where you can often rent a few square meters for a pittance each month). So this is not exactly a major operation the guy is running.
So based on all that, I would not invest in this project because I have no confidence the project creator would ever be able to pull it off - no time was devoted in the pitch to highlighting past successes, or how much progress has been made to date, or details about how the watch will be fabricated, etc. It's all just eye-candy.