The brand does not reveal much information about where they make their watches, but it is believed that most of their watches are made in China. ... Thomas Earnshaw is a good buy if you aren't concerned about where the brand makes their watches, and the model has the features you want.
Are Earnshaw watches worth it?
Top positive review
Earnshaw is based out of China. Some of their watches, which cost considerably more, are "Swiss Made." This means that a certain amount of the parts used, are swiss parts, but the watches are still assembled in China. ... But for the price of $150, I think it's well worth the money.
What movements do Earnshaw watches use?
Thomas Earnshaw does not show who made the movement, and I doubt they make their own movements, leaving me with no other conclusion than that they use chinese movements (most likely a Shanghai SHS-05).