Seiko Cal. 0721 - 545

The Seiko 0721-545 represents an important milestone in Seiko's 1990 lineup. With its 21mm lug width and 15.3mm profile, it sits comfortably on most wrists. [seikata-wm-28c340bfb13f]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1990

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