Seiko Cal. 6653 - 684

This Spring Drive model from 1975 features a 36mm Titanium case. With its 22mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-08bd7a52636b]

Also known as: Helmet, UFO

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1975

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