Seiko Cal. 4599 - 640

The Seiko 4599-640 represents an important milestone in Seiko's 1995 lineup. Powered by the 4599 caliber with 31j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-36f34fca14d0]

Also known as: Samurai, Bullhead

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

White

Jewels

31j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1995

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