Seiko Cal. 4573 - 237

The Seiko 4573-237 represents an important milestone in Seiko's 1969 lineup. Powered by the 4573 caliber with 21j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-f3e8015ab2a1]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

13.4mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Cream

Jewels

21j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1969

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