Seiko Cal. 6642 - 848

The 6642-848 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6642 caliber with 22j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-aee2ea3f288e]

Also known as: Turtle, Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

22j

Frequency

28,800 bph

Power Reserve

38 hours

Year

1965

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