Seiko Cal. 6378 - 477

This Spring Drive model from 1975 features a 39mm Hardlex-Coated Steel case. It features a Black dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-1fd10e15a0f7]

Also known as: Pogue

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1975

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