Seiko Cal. 5634 - 187

The Seiko 5634-187 represents an important milestone in Seiko's 1991 lineup. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-b4fafdd93399]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

10.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1991

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