Seiko Cal. 5631 - 869

The Seiko 5631-869 represents an important milestone in Seiko's 1983 lineup. It features a White dial protected by a Mineral crystal and offers 190m of water resistance. [seikata-wm-63fa11c23c28]

Also known as: Sumo, World Timer

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

190m

Dial Color

White

Jewels

28j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1983

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