Seiko Cal. 4591 - 136

The Seiko 4591-136 represents an important milestone in Seiko's 1976 lineup. Powered by the 4591 caliber with 32j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-2912d7079e1e]

Also known as: Turtle, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1976

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