Seiko Cal. 4531 - 874

The Seiko 4531-874 represents an important milestone in Seiko's 1987 lineup. Powered by the 4531 caliber with 21j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-85804729d44b]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Navy

Jewels

21j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1987

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