Seiko Cal. 6640 - 565

Seiko 6640-565

The 6640-565 is a sought-after Solar piece from Seiko's golden era. Powered by the 6640 caliber with 34j jewels beating at 28,800 bph, it delivers a 39 hours power reserve. [seikata-wm-6cbadd2095f3]

Also known as: Rally

Specifications

Movement
Solar
Case Material
Gold-Plated
Case Width
46mm
Case Thickness
12.2mm
Lug Width
21mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
150m
Dial Color
Cream
Jewels
34j
Frequency
28,800 bph
Power Reserve
39 hours
Year
1986

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