Seiko Cal. 5640 - 233

This Hand-Winding model from 1980 features a 36mm PVD Black case. With its 18mm lug width and 14.7mm profile, it sits comfortably on most wrists. [seikata-wm-477ac1986a7b]

Also known as: Panda, Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1980

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