Investigation
The evidence
Seiko was founded in Tokyo in 1881. The Seiko 5 line was born in 1963 with a simple promise: a robust automatic watch, with day and date, within reach of as many people as possible.
The brand makes its own movements. Classic models such as the SNXS77 use the 7S26 calibre, tough but with no hand winding. The range was relaunched in 2019 as Seiko 5 Sports, with a more recent calibre.
The crystal is a hardened mineral that Seiko calls Hardlex. It resists better than ordinary mineral, less well than sapphire.