Seiko Cal. 6634 - 591

The Seiko 6634-591 represents an important milestone in Seiko's 1967 lineup. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-405c6b8f18ae]

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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