Seiko Cal. 5637 - 998

This Hand-Winding model from 1991 features a 43mm Two-Tone case. The Bidirectional bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-33b01dc8e9ab]

Also known as: Sea Horse, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

8.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1991

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