Seiko Cal. 6640 - 796

This Spring Drive model from 1983 features a 45mm Stainless Steel case. With its 19mm lug width and 11.0mm profile, it sits comfortably on most wrists. [seikata-wm-d1d958b47cd0]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

180m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1983

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