Seiko Cal. 6678 - 639

The Seiko 6678-639 represents an important milestone in Seiko's 1972 lineup. It features a White dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-ebfc863f6b8d]

Also known as: Pogue, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

14.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1972

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