Seiko Cal. 6139 - 278

This Spring Drive model from 1969 features a 46mm Hardlex-Coated Steel case. It features a Green dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-087a0edb526f]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1969

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