Seiko Cal. 6378 - 204

The Seiko 6378-204 represents an important milestone in Seiko's 1990 lineup. It features a Green dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-9f25d7d415f4]

Also known as: UFO, Navigator

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1990

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