Seiko Cal. 5657 - 859

This Hand-Winding model from 1985 features a 42mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 40m of water resistance. [seikata-wm-10a43064b841]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

25j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1985

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