Seiko Cal. 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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