Seiko Cal. 0731 - 140

This Hand-Winding model from 1975 features a 45mm Hardlex-Coated Steel case. It features a Navy dial protected by a Acrylic crystal and offers 190m of water resistance. [seikata-wm-df32af3a8acd]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

27j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1975

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