Seiko Cal. 4531 - 663

The 4531-663 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-e38e23041ad0]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1979

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