Seiko Cal. 7137 - 957

The 7137-957 is a sought-after Automatic piece from Seiko's golden era. Powered by the 7137 caliber with 23j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-f9ce49e90b8a]

Also known as: Sumo, Bullhead

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Navy

Jewels

23j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1993

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