Seiko Cal. 6131 - 973

The Seiko 6131-973 represents an important milestone in Seiko's 1979 lineup. Powered by the 6131 caliber with 17j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-16f4b41d0827]

Also known as: Sumo, Helmet

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

80m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1979

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