Seiko Cal. 4491 - 257

This Hand-Winding model from 1972 features a 35mm PVD Black case. Powered by the 4491 caliber with 33j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-8a5448cf5455]

Also known as: Turtle, Flighty

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.6mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Blue Sunburst

Jewels

33j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1972

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