Seiko Cal. 4564 - 240

The Seiko 4564-240 represents an important milestone in Seiko's 1969 lineup. Powered by the 4564 caliber with 31j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-6119d89b15f2]

Also known as: Tuna, UFO

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

100m

Dial Color

Champagne

Jewels

31j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1969

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