Seiko Cal. 4591 - 387

The Seiko 4591-387 represents an important milestone in Seiko's 1966 lineup. With its 20mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-007e4f95feea]

Also known as: Turtle

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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