Seiko Cal. 5645 - 790

This Quartz model from 1981 features a 41mm Titanium case. It features a Champagne dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-06270f0ee302]

Also known as: Tuna, Sportsmatic

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

41mm

Case Thickness

14.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1981

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