Seiko Cal. 5640 - 405

The Seiko 5640-405 represents an important milestone in Seiko's 1983 lineup. Powered by the 5640 caliber with 35j jewels beating at 21,600 bph, it delivers a 49 hours power reserve. [seikata-wm-136ce0aa3748]

Also known as: Samurai

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Champagne

Jewels

35j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1983

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