Seiko Cal. 6648 - 390

This Spring Drive model from 1973 features a 41mm Titanium case. Powered by the 6648 caliber with 31j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-1d64783301b8]

Also known as: Shogun, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

13.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

31j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1973

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