Seiko Cal. 6687 - 368

This Spring Drive model from 1978 features a 43mm Stainless Steel case. It features a Navy dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-e1afaf6e01e8]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

26j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1978

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