Seiko Cal. 5642 - 710

This Spring Drive model from 1981 features a 40mm PVD Black case. It features a Black dial protected by a Hardlex crystal and offers 80m of water resistance. [seikata-wm-066222b0120e]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Black

Jewels

31j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1981

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