Seiko Cal. 5645 - 910

This Spring Drive model from 1980 features a 40mm Titanium case. With its 20mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-4d26584cb16a]

Also known as: Goldfeather, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

10.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1980

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