Grand Seiko "Ushio" UFA 300 Diver - Sized Right or Still Not Quite?! - Worth The Hype?! Episode #56

Grand Seiko "Ushio" UFA 300 Diver - Sized Right or Still Not Quite?! - Worth The Hype?! Episode #56

From My Watches Podcast by My Watches

June 1, 2026 · 38 min · Season 3 · Episode 56

About this episode

This episode reviews the Grand Seiko "Ushio" UFA 300 Diver, discussing its features and performance.

The Grand Seiko “Ushio” UFA 300 Diver is a professional dive watch housed in a 40.8 mm titanium case measuring 12.9 mm thick, paired with a ceramic bezel, sapphire crystal, and 300 m water resistance. It is powered by the new Spring Drive Calibre 9RB1, an automatic movement delivering 72 hours of power reserve and an exceptional ±20 seconds per year accuracy, earning the “U.F.A.” (Ultra Fine Accuracy) designation. The watch is available in blue or green, with large Lumibrite-filled hands and indices following the Evolution 9 design language. The titanium bracelet also comes with a micro-adjustment and a wetsuit extension,.

Topics covered

  • dive watch
  • Grand Seiko
  • watch review
  • Spring Drive
  • UFA designation
  • watch features

Keywords

  • Grand Seiko
  • Ushio
  • UFA 300 Diver
  • dive watch
  • Spring Drive
  • titanium case
  • 300 m water resistance
  • watch accuracy

Mentioned in this episode

Organizations: Grand Seiko

Products: Grand Seiko "Ushio" UFA 300 Diver, Spring Drive Calibre 9RB1

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