Seiko Cal. 6121 - 159

This Hand-Winding model from 1965 features a 37mm Hardlex-Coated Steel case. With its 18mm lug width and 10.4mm profile, it sits comfortably on most wrists. [seikata-wm-c20c8906f07b]

Also known as: Sumo, UFO

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1965

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