Seiko Cal. 6331 - 479

This Automatic model from 1970 features a 37mm Hardlex-Coated Steel case. Powered by the 6331 caliber with 21j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-978080543dfd]

Also known as: Shogun, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Silver

Jewels

21j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1970

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