Seiko Cal. 6642 - 493

The 6642-493 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6642 caliber with 31j jewels beating at 28,800 bph, it delivers a 47 hours power reserve. [seikata-wm-c1c8e7719dfe]

Also known as: World Timer, Crown

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Silver

Jewels

31j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1971

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