Seiko Cal. 4430 - 285

The Seiko 4430-285 represents an important milestone in Seiko's 1965 lineup. Powered by the 4430 caliber with 36j jewels beating at 28,800 bph, it delivers a 68 hours power reserve. [seikata-wm-2eef165b2a07]

Also known as: Helmet, Rally

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

14.3mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

36j

Frequency

28,800 bph

Power Reserve

68 hours

Year

1965

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