Seiko Cal. 4430 - 555

The 4430-555 is a sought-after Automatic piece from Seiko's golden era. Powered by the 4430 caliber with 35j jewels beating at 28,800 bph, it delivers a 53 hours power reserve. [seikata-wm-6b938a5e0e1b]

Also known as: Sportsmatic

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

9.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

60m

Dial Color

Silver

Jewels

35j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1977

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