Seiko Cal. 4426 - 642

Released in 1978, the Cal. 4426 with design code 642 was part of Seiko's domestic market collection. Powered by the 4426 caliber with 20j jewels beating at 36,000 bph, it delivers a 61 hours power reserve. [seikata-wm-5ba3685801ed]

Also known as: World Timer

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

61 hours

Year

1978

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