Seiko Cal. 4571 - 837

The Seiko 4571-837 represents an important milestone in Seiko's 1977 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-8bf03ba41657]

Also known as: Monster, Sumo

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1977

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