Grand Seiko unveils a brand new, elegant three-hand timepiece pushed by the hand-wound mechanical caliber 9S.
Embracing the codes of the Class assortment, the brand new Grand Seiko SBGW305 encompasses a timeless design in a 37.3 mm x 11.7 mm stainless-steel case whose strains are highlighted by Zaratsu sharpening. This proprietary method, also called blade sharpening, is carried out by rigorously making use of a rotating tin plate towards the case at a really exact angle. The ensuing floor is so extremely polished that it seems black from sure factors of view.
Protected by a box-shaped sapphire glass, the metallic silver-toned dial has a sunburst end and is complemented by faceted dauphine arms and utilized indices.
The see-through case again secured by six screws reveals the hand-wound 9S64 caliber. Using proprietary SPRON alloys for each the mainspring and stability spring, this 4 Hz (28,800 vibrations per hour) motion achieves secure precision throughout precise use and ensures an influence reserve of roughly three days when absolutely wound. A “slipping attachment” construction prevents over-winding and mainspring harm.
The typical each day fee of the motion (measured earlier than meeting in a case in a managed surroundings for 12 days) is +5 to -3 seconds per day, whereas the conventional utilization accuracy of the assembled watch is +10 to -1 seconds per day.
The timepiece is provided with a five-link stainless-steel bracelet that includes an unique rice-grain construction designed for wrist consolation, full with a triple-folding clasp with a button launch. The lug width measures 19 mm.
Waterproof to 100 metres / 330 toes, the Grand Seiko Class SBGW305 has a retail worth of Euro 5,800 / US$ 5,500. grand-seiko.com
