Seiko Cal. 5631 - 298

The Seiko 5631-298 represents an important milestone in Seiko's 1972 lineup. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-e964ef2c64c7]

Also known as: Monster, Silverwave

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

38mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

30j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1972

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