Seiko Cal. 5640 - 686

This Hand-Winding model from 1967 features a 41mm PVD Black case. With its 22mm lug width and 13.3mm profile, it sits comfortably on most wrists. [seikata-wm-845449e6bb37]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1967

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