Seiko Cal. 5631 - 210

This Hand-Winding model from 1965 features a 42mm Titanium case. It features a White dial protected by a Mineral crystal and offers 80m of water resistance. [seikata-wm-94ca11344e8a]

Also known as: Monster, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

13.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1965

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