Seiko Cal. 4430 - 948

The Seiko 4430-948 represents an important milestone in Seiko's 1979 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-343e5fe9f308]

Also known as: Helmet, Bellmatic

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

39mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1979

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