Grand Seiko Evolution 9 Spring Drive 'Ushio Tide'
The Evolution 9 Style is a set of original design techniques intended to further pursue usability and beauty in wristwatches and is a development upon the Grand Seiko Style. This sports watch combines these design elements with compliance with ISO standards to satisfy the requirements for a diver’s watch, with increased readability, operability, and robustness.
The coastal waters of Japan are influenced by the flow of the Kuroshio Current, one of the world’s major ocean currents, as well as by the nutrient-rich waters of the Oyashio Current, creating one of the world’s most diverse ocean regions. The dynamic undulation of the waves of these ocean currents is expressed in the powerful dial pattern of this watch, which also uses a unidirectionally rotating bezel with an insert made of ceramic. However, unlike last year’s Spring Drive diver’s watch, which was black, this year the dial and bezel are in Grand Seiko blue.
Guarantee: Five-year transferable guarantee with no registration or periodic maintenance checks required
Case: 45.8mm high-intensity titanium case with Zaratsu polished finish
Movement: Automatic Spring-Drive movement, Calibre 9RA5. ±10 seconds per month (±0.5 second per day)
Power Reserve: Power reserve of approximately 128 hours (5 days)
Winding Crown: High-intensity titanium crown with the Grand Seiko logo in relief
Waterproofness: 200m water resistant
Bezel: Unidirectional titanium and ceramic graduated bezel
Crystal: Sapphire crystal
Bracelet: Titanium, 3-link bracelet