Seiko Cal. 5631 - 719

The Seiko 5631-719 represents an important milestone in Seiko's 1977 lineup. It features a Navy dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-5f5b30d53a84]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

34j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1977

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