* Your 3rd video is the most presentable one and best intro, make it on top.
* The screen seems not be a touch-screen since not mentioned in features. So seems like only way to navigate the on-screen "buttons" with a single physical button is to press it until it cycles to highlight screen button and press and hold it to select. This does not seem to be a good UI.
For a v.2, you either need to use a capacitive touch screen, or make that single button you have on the bottom face of the watch like iphones, and have 4 to 6 buttons on the side, 2 to 3 on each left/right side so that app developers can program their screen buttons to float to left or right and user can just press the corresponding button. Of course the side buttons will need to be "concave" (not sure the right terminology for it) and be seamless on the side and not use that same old metallic button used in many watches. Minimalist does not work on a non touch-screen. Remember that even the ipod retained all 6+scroll buttons in its 10 year history.
[Edit: After a bit more though, if the side buttons are to be implemented, they need to go on only one side since the opposing side need to be empty for the opposing force of the thumb.]
Even if you decide to use a touch screen (pro version?), get rid of the side button and make it on the face like the iphone -- not only does it currently not look right on the Black Anodized version (some design work may be needed for a front facing button to look good on the Metallic one), but it will also hurt the users' finger less being a iphone-like button on the front for intensive apps like games.
* Why is the Black Anodized version cost $50 more? I would imagine the opposite. What does it have that the Metallic doesn't?
* Most people who spend $150+ on a watch actually cares how good it will look on him/her. Either make a pseudo (bunch of images wrapped in a slider div) 360 model view or take a bunch of pictures in different angles standalone and on different wrists (men and ladies). Have its dimensions stated like so:
->|x|<---
| | ^
| | |
| | |
|<-z->| y
| | |
| | |
| | -
* Why is the Blackberry features page totally hidden on the footer? That should be your main feature! In fact, write a hello world ASAP that talks to the iphone/ipad/android (eg. notifications or different vibration alerts for different notifications), it will probably 2-10x your sales and developers.
* Nitpicking - the "Buy it now" on the features page needs to be on the bottom, no one will buy until they read the features. And after reading, there's no "buy it now" action avail.
* Find a way to tap into the ipod nano watch or other smart watch community, you should get converts or potential customers there.
(Edited to format the diagram and more details.)