Seiko Cal. 4421 - 237

The 4421-237 is a sought-after Quartz piece from Seiko's golden era. Powered by the 4421 caliber with 29j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-642b28d8cfee]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

100m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1975

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