Seiko Cal. 6642 - 478

The 6642-478 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6642 caliber with 26j jewels beating at 21,600 bph, it delivers a 56 hours power reserve. [seikata-wm-763a0405a200]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

26j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1966

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