Seiko Cal. 6635 - 498

The Seiko 6635-498 represents an important milestone in Seiko's 1968 lineup. It features a White dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-0da3d830c717]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

45mm

Case Thickness

12.0mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

30j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1968

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