Seiko Cal. 7143 - 637

The 7143-637 is a sought-after Quartz piece from Seiko's golden era. Powered by the 7143 caliber with 33j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-f1df5ecfcce7]

Also known as: Sea Horse, Crown

Specifications

Movement

Quartz

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1998

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