Seiko Cal. 4427 - 485

The 4427-485 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4427 caliber with 31j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-7cf00703125f]

Also known as: Silverwave, Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

10.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Green

Jewels

31j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1990

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