I have this:

http://www.amazon.com/gp/product/B00RN832ZW

and I "think" it uses the same lenses, focal distance parts, and pupil distance parts, as the one in your post, the unit I have has good lenses, but the FOV is kinda small, the head strap is tight, almost to tight on my head, and the place for the nose was so small that I had to cut the plastic away just so I could wear it, it was made for very small heads with small features.

This one has good lenses, but the FOV is small, and is pretty well made, but has no magnet switch and the nose area is so small I had to cut it out with a Dremel:

www.amazon.com/SUNNYPEAK®-Cardboard-Distance-Adjustment-Compatible/dp/B00RN832ZW

From what I have read of the various reviews, all of the SUNNYPEAK units have ether good lenses with a small FOV, or crappy fresnel type lenses, but it also seems like they are all designed for small faces and heads, so the nose area will likely not be large enough.

I also have this unit:

www.amazon.com/SUNNYPEAK®-Finishing-Cardboard-Headband-Compatible/dp/B00WK9JX34

it has the crappy fresnel type lenses, and no magnet switch.