Seiko Cal. 4427 - 823

The 4427-823 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4427 caliber with 22j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-0d4f9e0f73e1]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1992

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