Seiko Cal. 6687 - 103

This Spring Drive model from 1969 features a 36mm PVD Black case. Powered by the 6687 caliber with 29j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-eb2ce74bcf5f]

Also known as: Helmet, Bellmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1969

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