Seiko Cal. 4430 - 507

This Spring Drive model from 1988 features a 35mm Two-Tone case. It features a Navy dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-e18be1196227]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1988

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