Seiko Cal. 6680 - 977

This Automatic model from 1983 features a 35mm Hardlex-Coated Steel case. Powered by the 6680 caliber with 36j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-8407b3915ab9]

Also known as: Helmet, Navigator

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1983

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