Seiko Cal. 6639 - 527

The 6639-527 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6639 caliber with 34j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-20b9b9d7a4ed]

Also known as: Turtle, Samurai

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1997

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