Seiko Cal. 5639 - 465

The Seiko 5639-465 represents an important milestone in Seiko's 1970 lineup. Powered by the 5639 caliber with 19j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-d251f0551472]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

35mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Silver

Jewels

19j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1970

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