I am wearing my Orient Mako USA today. Orient watch offers the Mako and Ray models while Orient Watch USA came out with the Mako USA model.
Visually all three are nearly identical. Between the standard Mako and Ray model. The only difference is that the hour indices are different and the lume on the hands, pip and indices are brighter and last longer on on the Ray vs the standard Mako.
Now the Mako USA is a nice upgrade while compared to the standard Mako and Ray models. The USA has solid endlinks on the bracelet while the Ray and Mako have hallow endlinks. The USA has even brighter and much longer lasting lume on the hands, pip and hour indices. The bezel was upgraded to 120 clicks of rotation vs the Ray and Mako with 60 clicks. And the USA also has sapphire crystal while the Ray and Mako have mineral crystal.
All three look nearly identical. Only watch nerds (like myself) would only really know the differences. All three were available with different dial colors with the standard Mako having the most dial color choices and bezel colors over the years.
Another nice feature from Orient in general is that every watch model that they offer no matter the price range. The watch movement is also made by Orient. That's pretty damn unique.
Some pics of the various models over the years.
Internet pics
Orient Mako
Orient blue Ray and black Ray Raven (PVD version)
Orient black Ray
Orient Mako USA
Orient Mako USA solid endlinks compared to Orient Mako and Ray hallow endlinks.
A quick visual comparison of all three models.
These three models are awesome and will not break the bank. Probably the best budget diver watch available.
A few of my own pics of my white dial USA model.
Oh, IIRC. They are about 40mm and 13mm thick.