Seiko Cal. 5661 - 324

This Spring Drive model from 1977 features a 44mm Titanium case. With its 22mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-8f40dd797292]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1977

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