Seiko Cal. 4550 - 906

This Spring Drive model from 1998 features a 36mm Titanium case. With its 21mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-fbe871c7816a]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

36j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1998

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