Seiko Cal. 4427 - 961

Released in 1988, the Cal. 4427 with design code 961 was part of Seiko's domestic market collection. Powered by the 4427 caliber with 21j jewels beating at 28,800 bph, it delivers a 43 hours power reserve. [seikata-wm-3036eb965fb2]

Also known as: Monster, Emperor

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

45mm

Case Thickness

9.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1988

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