Seiko Cal. 6140 - 101

The Seiko 6140-101 represents an important milestone in Seiko's 1979 lineup. The Inner Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-da90584aaabe]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

11.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Cream

Jewels

35j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1979

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