Seiko Cal. 0720 - 631

The 0720-631 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 0720 caliber with 29j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-b8f8d2df940a]

Also known as: Pogue, Emperor

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

200m

Dial Color

White

Jewels

29j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1976

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