Seiko Cal. 5278 - 643

The Seiko 5278-643 represents an important milestone in Seiko's 1984 lineup. It features a Green dial protected by a Hardlex crystal and offers 50m of water resistance. [seikata-wm-4811704abff0]

Also known as: Navigator

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

9.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

23j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1984

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