Seiko Cal. 6641 - 328

This Hand-Winding model from 1970 features a 40mm PVD Black case. Powered by the 6641 caliber with 35j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-685504804792]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

35j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1970

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