Grand Seiko Launches 5 Evolution 9 Spring Drive U.F.A. Watches With ±20-Second Annual Accuracy
Updated
Updated · fratellowatches.com · Jun 24
Grand Seiko Launches 5 Evolution 9 Spring Drive U.F.A. Watches With ±20-Second Annual Accuracy
3 articles · Updated · fratellowatches.com · Jun 24
Summary
Five new Evolution 9 Spring Drive references—SLGB007, 009, 011, 013 and 015—will reach boutiques and selected retailers in September 2026, adding a 37mm option and new dial variants including black Lake Suwa and green Atera Valley.
Caliber 9RB2 drives all five models and cuts stated deviation to ±20 seconds per year, versus about 120 seconds per year on older Spring Drive Evolution 9 models, using a vacuum-sealed crystal oscillator and IC with thermocompensation.
Practical updates include a tool-free three-step micro-adjust clasp with 2mm increments, a more tapered bracelet, 10-bar water resistance, and cases measuring either 40mm by 11.7mm or 37mm by 11.4mm.
Prices start at €10,400 for four Ever-Brilliant Steel models and rise to €11,700 for the High-Intensity Titanium SLGB007; buyers gain accuracy and new materials but give up the prior five-day reserve for 72 hours.
The release follows Grand Seiko's same-day debut of four Evolution 9 Hi-Beat models, extending a broader refresh of the flagship line around upgraded materials, standardized sizing and enthusiast-requested bracelet changes.