Seiko Cal. 6621 - 790

This Hand-Winding model from 1972 features a 39mm Hardlex-Coated Steel case. Powered by the 6621 caliber with 35j jewels beating at 21,600 bph, it delivers a 71 hours power reserve. [seikata-wm-8784989cf55b]

Also known as: Sportsmatic, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

13.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

71 hours

Year

1972

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