Seiko Cal. 4564 - 791

Seiko 4564-791

The 4564-791 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4564 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-70ccbb193a15]

Also known as: Baby Tuna

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
44mm
Case Thickness
14.9mm
Lug Width
18mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
50m
Dial Color
Blue Sunburst
Jewels
36j
Frequency
36,000 bph
Power Reserve
44 hours
Year
1987

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seikata-wm-70ccbb193a15