Seiko Cal. 6637 - 197

The Seiko 6637-197 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Sapphire crystal and offers 50m of water resistance. [seikata-wm-6e830f3a4fdb]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

44mm

Case Thickness

15.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1973

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