Seiko Cal. 6642 - 901

The 6642-901 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6642 caliber with 35j jewels beating at 28,800 bph, it delivers a 48 hours power reserve. [seikata-wm-1ae8d10f9866]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

48 hours

Year

1974

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