Seiko Cal. 7125 - 637

The 7125-637 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7125 caliber with 34j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-8106affb59c4]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Black

Jewels

34j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1970

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