Seiko Cal. 7137 - 957

Seiko 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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