Seiko Cal. 4421 - 436

The Seiko 4421-436 represents an important milestone in Seiko's 1974 lineup. Powered by the 4421 caliber with 18j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-4941915295a4]

Also known as: Pogue

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Burgundy

Jewels

18j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1974

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