Seiko Cal. 6635 - 509

This Spring Drive model from 1979 features a 44mm Titanium case. It features a Green dial protected by a Mineral crystal and offers 70m of water resistance. [seikata-wm-2b8f5a26d8bc]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

14.9mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1979

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