Seiko Cal. 4590 - 725

This Hand-Winding model from 1966 features a 45mm Titanium case. Powered by the 4590 caliber with 21j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-0ec891697d54]

Also known as: Monster

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1966

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