Seiko Cal. 4427 - 497

This Hand-Winding model from 1991 features a 45mm Hardlex-Coated Steel case. It features a Green dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-2cc55c89a141]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

28j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1991

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