This is the latest, 3rd Gen, San Martin 62MAS homage. Previous models had "San Martin" company name printed on the dial below 12 O'clock, but the 3rd gen has a new hexagonal applied logo replacing the print.
Its design is based on the Seiko's historical diver watch, 62MAS. Seiko does sell revised version of the 62MAS, such as SBDX019, SBEX009, SBDX039. Which were sold originally around $6,000, but as these are only manufactured a limited number. So if you would like to have a modern proper Seiko 62MAS, you would probably have to pay above $7,000.
All while you could purchase this San Martin for less $300! Sure maybe the details might not be as fine as the Seiko's counterparts, but San Martin offers various bezels. And I can tell you that the lumes on this timepiece is much brighter than a SKX007/009!
Brand Name: San Martin
Model Number: SN007-G V3
Feature: Date window
Bezel: 120 click uni-directional
Case Diameter: 40mm
Case Thickness: 12mm (14mm including the Sapphire Crystal)
Case Material: Stainless Steel
Crystal: Box-style Sapphire Crystal
Movement: SII NH35A
Water Resistance Depth: 200M
Bracelet/Strap Type: "Waffle"-style rubber strap / Stainless steel bracelet
Bracelet/Strap Width: 20mm
Boxes & Cases Material: Paper