Seiko Cal. 6642 - 157

The Seiko 6642-157 represents an important milestone in Seiko's 1991 lineup. Powered by the 6642 caliber with 36j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-45e5837d16c3]

Also known as: UFO, Bellmatic

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Champagne

Jewels

36j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1991

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