Seiko Cal. 5642 - 437

The Seiko 5642-437 represents an important milestone in Seiko's 1972 lineup. Powered by the 5642 caliber with 35j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-55a926f07646]

Also known as: UFO

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1972

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