Seiko Cal. 6321 - 580

This Hand-Winding model from 1992 features a 37mm Hardlex-Coated Steel case. With its 22mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-1ed1afb0484c]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1992

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