Seiko Cal. 4427 - 856

The 4427-856 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4427 caliber with 18j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-68b84209af03]

Also known as: Helmet, Bellmatic

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

170m

Dial Color

Cream

Jewels

18j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1997

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