Seiko Cal. 6636 - 793

The Seiko 6636-793 represents an important milestone in Seiko's 1971 lineup. With its 20mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-c460b6a305eb]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Green

Jewels

32j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1971

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