Seiko Cal. 4437 - 594

The 4437-594 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4437 caliber with 24j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-1a3f4dae32fd]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.6mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

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