Seiko Cal. 7157 - 940

The Seiko 7157-940 represents an important milestone in Seiko's 1975 lineup. Powered by the 7157 caliber with 18j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-ad6f1c306c36]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

13.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

110m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1975

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