Seiko Cal. 6639 - 710

This Hand-Winding model from 1992 features a 35mm Stainless Steel case. Powered by the 6639 caliber with 27j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-88e9db6793ac]

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1992

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