Seiko Cal. 0789 - 437

The Seiko 0789-437 represents an important milestone in Seiko's 1972 lineup. Powered by the 0789 caliber with 21j jewels beating at 36,000 bph, it delivers a 54 hours power reserve. [seikata-wm-b129147b2004]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

54 hours

Year

1972

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