Seiko Cal. 4440 - 591

This Hand-Winding model from 1973 features a 36mm Two-Tone case. Powered by the 4440 caliber with 29j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-e7150cb415c7]

Also known as: Tuna, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1973

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