Seiko Cal. 4442 - 657

Released in 1997, the Cal. 4442 with design code 657 was part of Seiko's domestic market collection. Powered by the 4442 caliber with 20j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-92cd126ed3d2]

Also known as: Sumo, Arnie

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

8.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1997

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