Seiko Cal. 6638 - 723

This Spring Drive model from 1998 features a 43mm Two-Tone case. With its 21mm lug width and 15.4mm profile, it sits comfortably on most wrists. [seikata-wm-b0a1f08a541a]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1998

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