Seiko Cal. 5640 - 457

Seiko 5640-457

The 5640-457 is a sought-after Solar piece from Seiko's golden era. Powered by the 5640 caliber with 27j jewels beating at 36,000 bph, it delivers a 69 hours power reserve. [seikata-wm-69af2d8a05aa]

Also known as: Monster, Shogun

Specifications

Movement
Solar
Case Material
Two-Tone
Case Width
46mm
Case Thickness
14.1mm
Lug Width
18mm
Crystal
Hardlex
Bezel
Bidirectional
Water Resistance
80m
Dial Color
Blue Sunburst
Jewels
27j
Frequency
36,000 bph
Power Reserve
69 hours
Year
1985

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