Seiko Cal. 4557 - 320

The 4557-320 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4557 caliber with 22j jewels beating at 36,000 bph, it delivers a 66 hours power reserve. [seikata-wm-a6b2b49d407e]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

10.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1990

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