Grand Seiko Unveils The Evolution 9 Tentagraph SLGC001 Watch

A new technological marvel from the Evolution 9 collection.


Grand Seiko has unveiled a new watch novelty at Watches & Wonders 2023, the Grand Seiko SLGC001 Tentagraph from the Evolution 9 Collection. It is Grand Seiko’s first mechanical chronograph, making it a highly anticipated release among watch enthusiasts.

The Tentagraph’s case is made from high-intensity titanium, which is about 30 percent lighter and more scratch-resistant than stainless steel. The bezel is made from scratch-resistant ceramic, providing durability and aesthetic appeal. The case measures 43.2mm x 15.3mm, with a lug-to-lug measurement of 51.5mm. The case features a screw-down crown, a see-through and screw case back, and a box-shaped sapphire crystal with an anti-reflective coating on the inner surface.

The dial of the Tentagraph evokes the magnificence of Mt. Iwate, the soaring peak visible from the Grand Seiko Studio Shizukuishi. The dial pattern is highly intricate and visually striking, showcasing the brand’s commitment to exceptional craftsmanship. The watch features Lumibrite on its hands and indexes, ensuring easy readability in low-light conditions.

The Tentagraph is powered by the Caliber 9SC5. It is an automatic high-beat chronograph with manual winding and a power reserve of 72 hours. The chronograph measures 30 minutes and 12 hours, making it a highly functional timepiece. The movement accuracy is rated at +5 to -3 seconds per day mean daily rate.

The Tentagraph’s bracelet has a three-fold clasp with a push-button release, providing ease of use and a secure fit on the wrist. The watch will be available in June 2023, priced at USD 13,700.00.