Seiko Cal. 6378 - 275

This Hand-Winding model from 1966 features a 41mm Hardlex-Coated Steel case. The Coin-Edge bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-98b0685af297]

Also known as: Sea Horse, Flighty

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

22j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1966

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