The new “GT” watches were inspired by the “Grand Touring” automobiles for motor sports, Okuyama's field of expertise.

By fusing grace into the simple, unadorned automotive design, the functional elements of the GT automobiles—speed, distance, and time—are embodied in the mechanical watches.

As if heralding a grand adventure to places unknown, the new ISSEY MIYAKE Prestige Watches are ready to begin ticking.


 Kiyoyuki Ken Okuyama

Kiyoyuki Ken Okuyama
Industrial designer and CEO, KEN OKUYAMA DESIGN

Born in 1959 in Yamagata, Japan. Ken has worked as a Chief Designer for General Motors, a Senior Designer for Porsche AG, and a Design Director for Pininfarina S.p.A., being responsible for Ferrari Enzo, Maserati Quattroporte, and many other projects. He is also known for numerous products such as motorcycles, furniture, robots, and architecture. In 2007, KEN OKUYAMA DESIGN was founded providing design business consultancy to many corporations. The recent works include Shinkansen, trains, tractors, watches, etc. The company also produces and markets limited production of automobiles, eyewear, and interior products under Ken Okuyama brand.
He is currently a director of Yanmar Holdings Co., Ltd. and a visiting professor at several universities. Ken is also an author of many books.

  • car design
  • car design



Case and band material: Stainless steel

Weight: Approximately 227 g


Case material: Stainless steel (Bezel: Hard coating)

Band material: Crocodile

Weight: Approximately 139 g


Glass material: Sapphire glass
Case size: Diameter: 45.2 mm, thickness: 15.0 mm
Caliber: Mechanical movement 8R48
Jewels: 34 jewels
Functions: Indication (Hour/Minute/Second) + Calendar (Date) + Stopwatch Function (maximum of 30 minutes and 12 hours)
Accuracy: Average daily loss/gain between -15 and +25 seconds
Case back: See-through
Power reserve: Approximately 45 hours
Vibrations: 28,800 vibrations/hour (8 beats/second)
Water resistance: 10 bar