Grand Seiko Heritage SBGW323 36.5 mm

The Heritage SBGW323 brings a compact 36.5 mm stainless-steel case to the collection, with a 42.7 mm lug-to-lug span and 11.6 mm thickness. Its box-shaped sapphire crystal and solid caseback frame the round profile, while LumiBrite, a screw-down crown and 100-metre water resistance add practical substance. The folding clasp and power-reserve indication give this medium, unisex reference a considered balance between formal detailing and daily function.

The manually wound in-house 9S64 has 24 jewels, one barrel and 72 hours of power reserve. It beats at 28,800 vph, supports hand-winding and hacking seconds, and is tested in six positions. Grand Seiko specifies accuracy of +5/-3s/day and the Grand Seiko Standard. Within the Heritage family, the 9S64 keeps the movement architecture direct and time-focused, allowing the SBGW323's smaller case to remain the principal visual statement.