Seiko Cal. 7157 - 564

This Spring Drive model from 1978 features a 34mm Two-Tone case. Powered by the 7157 caliber with 22j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-4721fd665f76]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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