Seiko Cal. 4425 - 631

This Hand-Winding model from 1980 features a 40mm Titanium case. It features a Navy dial protected by a Hardlex crystal and offers 60m of water resistance. [seikata-wm-5fa6e9cf36a8]

Also known as: Tuna, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1980

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