Seiko Cal. 6647 - 936

The 6647-936 is a sought-after Spring Drive piece from Seiko's golden era. The Inner Rotating bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-688d6e9d660b]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1988

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