Seiko Cal. 6377 - 634

The Seiko 6377-634 represents an important milestone in Seiko's 1975 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-9f209dc139cd]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Cream

Jewels

30j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1975

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