Seiko Cal. 6647 - 348

This Hand-Winding model from 1968 features a 39mm Titanium case. Powered by the 6647 caliber with 18j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-231853b9335e]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

9.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1968

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