Seiko Cal. 6678 - 718

This Automatic model from 1972 features a 40mm Hardlex-Coated Steel case. Powered by the 6678 caliber with 36j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-6d677be99bb1]

Also known as: Helmet, Emperor

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

14.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1972

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