Grand Seiko Evolution 9 Spring Drive U.F.A Ushio 300 Diver 40.8mm Watch wedding-band The slightly curved lines ending

The slightly curved lines ending in three spirals on the yellow gold-coated clip correspond to the decoration on the forged metal frame

adding dimensionality and utility

Functionality: The watch is designed for impeccable timekeeping

The timepiece conforms to the ISO 6425 norm for scuba diving and comes with a water resistance of 300 metres and features luminescent markings for reading in low light

Grand Seiko Evolution 9 Spring Drive U.F.A Ushio 300 Diver 40.8mm Watch wedding-band The slightly curved lines endingIn 2025, Grand Seiko unveiled the Spring Drive Caliber 9RB2, a groundbreaking movement that received the then new U. F. A. designation, standing for Ultra Fine Accuracy. Boasting an annual accuracy rate of 20 seconds, Caliber 9RB2 earned the distinction of being the most accurate wristwatch movement powered by a mainspring.* This model is powered by Caliber 9RB1, featuring an improved construction that makes it ideal for sporting conditions while