Seiko Cal. 4443 - 420

The 4443-420 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4443 caliber with 29j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-3b66245e7f81]

Also known as: Arnie, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

15.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

29j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1966

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