Seiko Cal. 7178 - 746

This Quartz model from 1973 features a 41mm Hardlex-Coated Steel case. Powered by the 7178 caliber with 17j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-e67c712414a6]

Also known as: Tuna, Crown

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1973

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