Seiko Cal. 7177 - 991

This Spring Drive model from 1970 features a 41mm Hardlex-Coated Steel case. Powered by the 7177 caliber with 36j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-29073abdbf83]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Navy

Jewels

36j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1970

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