Seiko Cal. 5638 - 997

The Seiko 5638-997 represents an important milestone in Seiko's 1972 lineup. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-1ceb723ad6fd]

Also known as: Bellmatic, Navigator

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

36mm

Case Thickness

12.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

21j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1972

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