Seiko Cal. 4531 - 310

This Hand-Winding model from 1990 features a 41mm Hardlex-Coated Steel case. The Inner Rotating bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-a310fc8befd5]

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Blue Sunburst

Jewels

26j

Frequency

36,000 bph

Power Reserve

40 hours

Year

1990

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