Seiko Cal. 4431 - 527

This Hand-Winding model from 1981 features a 45mm Two-Tone case. It features a Champagne dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-c38b29921089]

Also known as: Silverwave, World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

45mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

19j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1981

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