Seiko Cal. 4525 - 178

The Seiko 4525-178 represents an important milestone in Seiko's 1980 lineup. It features a Navy dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-b257a24af18c]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Navy

Jewels

24j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1980

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