Seiko Cal. 5237 - 187

The Seiko 5237-187 represents an important milestone in Seiko's 1976 lineup. Powered by the 5237 caliber with 31j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-be75b5acacb3]

Also known as: Samurai, Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

65 hours

Year

1976

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