Seiko Cal. 6639 - 242

The Seiko 6639-242 represents an important milestone in Seiko's 1999 lineup. Powered by the 6639 caliber with 24j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-8ded8265af45]

Also known as: Goldfeather, Crown

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Black

Jewels

24j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1999

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