Seiko Cal. 6651 - 645

This Spring Drive model from 1968 features a 35mm Stainless Steel case. It features a White dial protected by a Sapphire crystal and offers 40m of water resistance. [seikata-wm-234e880aa2fe]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1968

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