Seiko Cal. 4564 - 240

Seiko 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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