Seiko Cal. 5631 - 836

The Seiko 5631-836 represents an important milestone in Seiko's 1976 lineup. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-04ce1ce2b9be]

Also known as: Rally, World Timer

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

38mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1976

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