Seiko Cal. 4437 - 981

The 4437-981 is a sought-after Solar piece from Seiko's golden era. Powered by the 4437 caliber with 35j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-42a368f0d643]

Also known as: Rally, Emperor

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

11.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1975

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