Side-by-side at a glance. Click a watch above to open the full reference page.

	Grand Seiko SLGC001	Grand Seiko SLGW003
Model	Evolution 9 Collection Tentagraph	Evolution 9 Hand-Wound Hi-Beat SLGW003
Caliber	Grand Seiko Cal. 9SC5 -- self-winding with manual winding, 36,000 bph, ~72h PR, 60j	Grand Seiko Cal. 9SA4 -- in-house manual-wind hi-beat, 36,000bph, 80h PR; +5/-3 sec/day accuracy
Case size	43.2mm	38.6mm
Lug-to-lug	51.5mm	45mm
Years produced	2023–present	2023–present
Brand tier	luxury	luxury
Era	modern	modern
Movement tier	Unclassified movement	Unclassified movement
Market median (excellent / full-set)	n/a	n/a
Typical range	n/a	n/a
Confidence	low	low
Categories	chronograph, sport	n/a
Editorial	n/a	n/a

Grand Seiko Evolution 9 Collection Tentagraph vs Grand Seiko Evolution 9 Hand-Wound Hi-Beat SLGW003