Seiko Cal. 4437 - 326

Released in 1971, the Cal. 4437 with design code 326 was part of Seiko's domestic market collection. Powered by the 4437 caliber with 29j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-89f3dacb6ab3]

Also known as: Bellmatic, World Timer

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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