Seiko Cal. 6131 - 677

Released in 1965, the Cal. 6131 with design code 677 was part of Seiko's domestic market collection. The Inner Rotating bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-0bbdfa2dd4ee]

Also known as: Goldfeather

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Green

Jewels

30j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1965

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