Seiko Cal. 4478 - 428

This Spring Drive model from 1969 features a 40mm Two-Tone case. It features a Blue Sunburst dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-a1d6148d4cf9]

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

8.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1969

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