Seiko Cal. 6139 - 121

This Spring Drive model from 1977 features a 43mm Hardlex-Coated Steel case. The Coin-Edge bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-ac182ef38c2a]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1977

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