Seiko Cal. 4590 - 736

The 4590-736 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4590 caliber with 36j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-39aeb403f2d0]

Also known as: Bullhead, World Timer

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

35mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1983

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