Seiko Cal. 6242 - 427

The 6242-427 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6242 caliber with 24j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-849afc2d48c1]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

24j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1979

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