Seiko Cal. 4591 - 135

This Automatic model from 1986 features a 45mm PVD Black case. Powered by the 4591 caliber with 20j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-c21dc7ccfc6d]

Also known as: Sumo, Bellmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1986

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