Seiko Cal. 7139 - 838

The Seiko 7139-838 represents an important milestone in Seiko's 1981 lineup. It features a Cream dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-3e0c96a8deaa]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1981

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