Uploaded September 2022 | Updated September 2026, 3 weeks ago

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Seiko's new GMT watch is amazing! We spend a good amount of time testing the Seiko SSK003. We even took it apart to see what's inside the watch, and discover how Seiko managed to make this watch so affordable. This is as in-depth as in-depth review can get.

We'll cover the design, what we like and don't like about the watch, the GMT function, the movement 4R34/NH34, and its mod compatibility with common Seiko mod.

This is an unpaid review. Opinions are thus unbiased. We aim to provide an honest, objective and comprehensive review of the SSK003. Hope you find this review useful.

Timeline:
▶00:00 - Introduction
▶00:38 - Key specs
▶01:05 - Design
▶01:54 - Cyclops
▶02:08 - GMT bezel
▶02:51 - Chapter ring
▶03:06 - GMT hand
▶03:43 - Lume performance
▶03:58 - Cutting corners
▶05:14 - Looking at 4r34 movement
▶06:28 - Mod possibility with SKX
▶07:06 - Final thoughts