Seiko Cal. 4536 - 937

The Seiko 4536-937 represents an important milestone in Seiko's 1989 lineup. Powered by the 4536 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-22cd167818ae]

Also known as: UFO, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Champagne

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1989

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