Grand Seiko introduces the Tentagraph movement within the Tokyo Lion design, a bold and angular case that reflects the brand’s pursuit of high-performance watchmaking. The SLGC009 marks the first mechanical model to feature this lion-inspired case, now crafted in Brilliant Hard Titanium for enhanced durability and a refined finish.

The case design highlights hairline-finished, claw-like surfaces extending from the lugs to the bezel, while the dial pattern evokes the flowing mane of a lion. Three-dimensional sub-dials at 3, 6, and 9 o’clock enhance legibility by reducing the distance between the markings and hands. Diamond-cut indexes reflect light with precision and are elevated in height to accommodate Lumibrite for improved visibility in any setting.

Complementing the design, a newly developed rubber strap offers nearly 2.7 times the tensile strength of a typical Grand Seiko silicone strap, with a rich brown hue that pairs seamlessly with the patterned dial.

At its core, the watch is powered by the Tentagraph Caliber 9SC5, Grand Seiko’s first mechanical chronograph movement. Designed for both performance and longevity, it features a 72-hour power reserve while the chronograph is in use. The movement incorporates a Dual Impulse escapement, twin barrels, and a high-frequency 10-beat regulation system, alongside a column wheel, vertical clutch, and three-pointed hammer—hallmarks of precision chronograph engineering. The pushers have been refined to enhance ease of use, offering a precise and responsive feel with each press, further elevating the chronograph’s functionality.