Seiko Cal. 6620 - 194

This Spring Drive model from 1978 features a 42mm PVD Black case. Powered by the 6620 caliber with 22j jewels beating at 28,800 bph, it delivers a 70 hours power reserve. [seikata-wm-24cc890d3343]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1978

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