Seiko Cal. 6635 - 548

The Seiko 6635-548 represents an important milestone in Seiko's 1988 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-0100e65a61ec]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

13.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Cream

Jewels

26j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1988

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