Seiko Cal. 6687 - 115

This Spring Drive model from 1968 features a 39mm PVD Black case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-5359e1e4aca0]

Also known as: Sumo, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1968

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