Seiko Cal. 4564 - 250

The Seiko 4564-250 represents an important milestone in Seiko's 1970 lineup. Powered by the 4564 caliber with 31j jewels beating at 21,600 bph, it delivers a 50 hours power reserve. [seikata-wm-e4d219e2c19b]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

35mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

50 hours

Year

1970

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