Seiko Cal. 0731 - 400

This Hand-Winding model from 1981 features a 40mm Two-Tone case. It features a Green dial protected by a Hardlex crystal and offers 150m of water resistance. [seikata-wm-848a61c85686]

Also known as: Pogue, Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Green

Jewels

30j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1981

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