Grand seiko 6145-8000

Grand Seiko 6145-8000 – Hi-Beat Precision, Pure Japanese Craftsmanship

A watch that represents Grand Seiko at its most purposeful. This Grand Seiko 6145-8000 combines sharp design with serious technical pedigree, delivering both elegance and performance in one understated package.

The dial is clean and highly legible, with applied indices and razor-sharp hands that reflect Grand Seiko’s obsession with precision finishing. The subtle texture and perfectly balanced layout give it that unmistakable GS clarity—everything is exactly where it should be. The framed date window integrates seamlessly, while the case shows the strong, angular lines typical of late 1960s / early 1970s Japanese design.

On the wrist, it feels solid, precise, and refined—very much a watch built with intent.

Technical Background

This reference is powered by the Grand Seiko calibre 6145, a high-beat automatic movement running at 36,000 vibrations per hour. Part of the renowned 61GS family, it was among the most advanced movements produced by Seiko at the time.

The movement features a quickset date and hacking seconds, combining high-frequency accuracy with everyday usability. The 61GS series marked a major step in Grand Seiko’s pursuit of precision and remains highly regarded among collectors.

Tech Sheet

• Brand: Grand Seiko
• Model: 6145-8000
• Reference: 6145-8000
• Serial: 8301XX
• Year: 1968
• Movement: Automatic, Hi-Beat (36,000 bph), calibre 6145
• Case: Stainless steel
• Dial: Silver, applied indices
• Crystal: Hardlex
• Size: ~37mm
• Lug width: ~19mm
• Strap: Brown leather strap
• Condition: Good vintage condition with light wear consistent with age
• Warranty: 2-year warranty