Seiko Cal. 6681 - 321

This Spring Drive model from 1978 features a 34mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-63e1a71f7c1e]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1978

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