Seiko Cal. 3873 - 634

The Seiko 3873-634 represents an important milestone in Seiko's 1991 lineup. The Coin-Edge bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-747ae60651d7]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Burgundy

Jewels

25j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1991

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