Seiko Cal. 6665 - 645

The 6665-645 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6665 caliber with 20j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-11dbcff7aac8]

Also known as: World Timer, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

40m

Dial Color

White

Jewels

20j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1992

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