Seiko Cal. 7151 - 635

The 7151-635 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7151 caliber with 20j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-fc967ebf7e5d]

Also known as: Bullhead, Helmet

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

20j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1965

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