Grand Seiko unveiled its latest masterpiece, the Kodo Constant-force Tourbillon, at Watches and Wonders 2022, showcasing the brand’s exceptional technical prowess. This mechanical marvel, dubbed the brand’s ‘first mechanical complication,’ integrates two sophisticated mechanisms on a single axis for the first time in history, garnering acclaim and winning the Chronometry Prize at the Grand Prix d’Horlogerie de Genève.

The innovative design of the Kodo Constant-force Tourbillon features two mechanisms on one axis, ensuring a stable amplitude of the balance due to the direct transmission of torque. Embodying Grand Seiko’s aesthetic of light and shadow, the new SLGT005G edition draws inspiration from daybreak, capturing the moment when morning light emerges to illuminate the sky.

The open design of the watch allows light to permeate through the meticulously hand-polished movement components, creating a stunning visual display. The hand-wound Caliber 9ST1, boasting a 50-hour power reserve, showcases intricate construction and layered parts, accentuated by a silver tone that enhances the overall brilliance of the timepiece.

Grand Seiko’s attention to detail is evident in the replacement of rubies with blue sapphires, seamlessly integrating this unexpected touch into the design. Each component of the movement is meticulously finished by hand using various techniques, resulting in a shimmering finish that epitomizes the brand’s craftsmanship.

The combination of the two mechanisms not only enhances the precision of the Kodo Constant-force Tourbillon but also creates a captivating visual spectacle. With its fusion of technical innovation and artistic design, Grand Seiko continues to push the boundaries of watchmaking excellence.