Seiko Cal. 4420 - 329

The 4420-329 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4420 caliber with 30j jewels beating at 28,800 bph, it delivers a 57 hours power reserve. [seikata-wm-ac0e4d96f136]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

35mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Cream

Jewels

30j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1990

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