Seiko Cal. 6646 - 897

This Hand-Winding model from 1981 features a 41mm Titanium case. Powered by the 6646 caliber with 18j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-fd71f571fafa]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

41mm

Case Thickness

13.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1981

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