Seiko Cal. 5699 - 640

The 5699-640 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5699 caliber with 34j jewels beating at 36,000 bph, it delivers a 46 hours power reserve. [seikata-wm-51b4a41feb55]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

14.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

60m

Dial Color

Cream

Jewels

34j

Frequency

36,000 bph

Power Reserve

46 hours

Year

1979

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