Seiko Cal. 4430 - 607

The Seiko 4430-607 represents an important milestone in Seiko's 1988 lineup. Powered by the 4430 caliber with 23j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-6cf68a7ba211]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

44mm

Case Thickness

11.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1988

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