Seiko Cal. 6620 - 537

Released in 1965, the Cal. 6620 with design code 537 was part of Seiko's domestic market collection. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-4dce5ea15356]

Also known as: Navigator

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

17j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1965

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