Seiko Cal. 6642 - 426

The 6642-426 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6642 caliber with 24j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-412f31c39802]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

24j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1971

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