Seiko Cal. 6378 - 367

The 6378-367 is a sought-after Spring Drive piece from Seiko's golden era. It features a Green dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-93dddd61e425]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1988

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