Seiko Cal. 6331 - 777

This Spring Drive model from 1975 features a 35mm Gold-Plated case. It features a Champagne dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-43769b45f592]

Also known as: Turtle, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Champagne

Jewels

29j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1975

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