Seiko Cal. 6647 - 447

This Quartz model from 1971 features a 41mm Two-Tone case. It features a White dial protected by a Mineral crystal and offers 60m of water resistance. [seikata-wm-85fdbf0fa65a]

Also known as: Monster, Navigator

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1971

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