Grand Seiko introduces smaller Spring Drive dive watches with ultra-accurate movement

Grand Seiko has released new, smaller Spring Drive dive watches featuring an ultra-accurate movement. The new models measure under 41mm, are made of high-intensity titanium, and boast the world-record-holding Caliber 9RB1 UFA movement with ±20 seconds per year accuracy. These divers update the brand's previous larger models, offering improved specifications and a more compact, wearable design inspired by the "Ushio" tide pattern.