Seiko Cal. 6621 - 821

The Seiko 6621-821 represents an important milestone in Seiko's 1972 lineup. Powered by the 6621 caliber with 35j jewels beating at 21,600 bph, it delivers a 68 hours power reserve. [seikata-wm-e72078eb7aae]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1972

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