Seiko Cal. 5639 - 828

The 5639-828 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5639 caliber with 32j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-2bb7726a7320]

Also known as: Turtle, Bullhead

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

Burgundy

Jewels

32j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1965

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