Seiko Cal. 6647 - 607

This Spring Drive model from 1987 features a 39mm PVD Black case. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-e2031034b099]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1987

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