Seiko Cal. 4430 - 931

The Seiko 4430-931 represents an important milestone in Seiko's 1977 lineup. It features a Black dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-dd4aebf22ad9]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

42mm

Case Thickness

9.7mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

22j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1977

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