Seiko Cal. 4490 - 431

This Hand-Winding model from 1986 features a 44mm Two-Tone case. The Inner Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-fdec16da9c8d]

Also known as: Sportsmatic, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

44mm

Case Thickness

14.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1986

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