Seiko Cal. 6635 - 863

The Seiko 6635-863 represents an important milestone in Seiko's 1978 lineup. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-c9504ab24003]

Also known as: Sea Horse

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

36mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1978

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