Seiko Cal. 6640 - 336

This Hand-Winding model from 1974 features a 35mm Titanium case. Powered by the 6640 caliber with 31j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-e9ab2a92bfee]

Also known as: Shogun, Flighty

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

15.0mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1974

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