Seiko Cal. 4420 - 172

The 4420-172 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4420 caliber with 19j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-5ac69bb8f7e8]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1989

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