Seiko Cal. 5640 - 909

The Seiko 5640-909 represents an important milestone in Seiko's 1991 lineup. Powered by the 5640 caliber with 33j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-5c78b0316cb8]

Also known as: Golden Tuna

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

35mm

Case Thickness

11.0mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Champagne

Jewels

33j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1991

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