Seiko Cal. 7137 - 391

This Automatic model from 1975 features a 40mm PVD Black case. Powered by the 7137 caliber with 33j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-3b966b3cb8a3]

Also known as: Samurai, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

11.8mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

33j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1975

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