Seiko Cal. 6640 - 532

This Spring Drive model from 1981 features a 39mm PVD Black case. With its 19mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-5073e2695cd4]

Also known as: Panda

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

110m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1981

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