Seiko Cal. 6663 - 635

The Seiko 6663-635 represents an important milestone in Seiko's 1973 lineup. It features a Burgundy dial protected by a Mineral crystal and offers 120m of water resistance. [seikata-wm-0765d7f9fede]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

Titanium

Case Width

35mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

67 hours

Year

1973

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