Seiko Cal. 6121 - 807

This Spring Drive model from 1978 features a 42mm PVD Black case. The Bidirectional bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-b5b7d99c6515]

Also known as: Sumo, Crown

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

10.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Cream

Jewels

17j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1978

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