Seiko Cal. 6637 - 731

This Solar model from 1989 features a 34mm PVD Black case. It features a Silver dial protected by a Sapphire crystal and offers 100m of water resistance. [seikata-wm-7a493b37d252]

Also known as: Sea Horse, Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

34mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1989

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