Seiko Cal. 6620 - 406

This Spring Drive model from 1975 features a 39mm Titanium case. The Fixed bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-6bba555f813f]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

50m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1975

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