Seiko Cal. 4436 - 621

The Seiko 4436-621 represents an important milestone in Seiko's 1991 lineup. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-abc237740ca7]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1991

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