Seiko Cal. 6378 - 689

The Seiko 6378-689 represents an important milestone in Seiko's 1969 lineup. It features a Black dial protected by a Mineral crystal and offers 200m of water resistance. [seikata-wm-63d4d9670d00]

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1969

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