Seiko Cal. 4421 - 673

The Seiko 4421-673 represents an important milestone in Seiko's 1970 lineup. Powered by the 4421 caliber with 33j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-f4323f2d26be]

Also known as: Pogue, Helmet

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Silver

Jewels

33j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1970

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