Seiko Cal. 6639 - 252

The Seiko 6639-252 represents an important milestone in Seiko's 1992 lineup. Powered by the 6639 caliber with 24j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-c5960f4a9189]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

24j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1992

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