Seiko Cal. 6642 - 878

The Seiko 6642-878 represents an important milestone in Seiko's 1975 lineup. It features a Champagne dial protected by a Sapphire crystal and offers 200m of water resistance. [seikata-wm-a7efa7d512cc]

Also known as: Pogue, Sportsmatic

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1975

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