Seiko Cal. 6138 - 376

This Spring Drive model from 1991 features a 35mm Two-Tone case. It features a Black dial protected by a Hardlex crystal and offers 200m of water resistance. [seikata-wm-0e7174b0ed0c]

Also known as: Monster, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

29j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1991

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