Seiko Cal. 7156 - 645

This Hand-Winding model from 1970 features a 43mm Stainless Steel case. Powered by the 7156 caliber with 23j jewels beating at 21,600 bph, it delivers a 54 hours power reserve. [seikata-wm-c358cb21a225]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

54 hours

Year

1970

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