Seiko Cal. 6642 - 290

The 6642-290 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6642 caliber with 30j jewels beating at 21,600 bph, it delivers a 55 hours power reserve. [seikata-wm-b65dac4bbb3d]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1983

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