Seiko Cal. 6377 - 378

This Spring Drive model from 1979 features a 34mm Hardlex-Coated Steel case. The Coin-Edge bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-f6a6782a25ae]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1979

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