Seiko Cal. 6631 - 741

This Solar model from 1975 features a 34mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-db36fe09e21c]

Also known as: Golden Tuna

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

130m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1975

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