Seiko Cal. 6137 - 554

The Seiko 6137-554 represents an important milestone in Seiko's 1972 lineup. Powered by the 6137 caliber with 31j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-3379ef908d69]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

8.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1972

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