Seiko Cal. 4421 - 937

The Seiko 4421-937 represents an important milestone in Seiko's 1977 lineup. It features a Navy dial protected by a Sapphire crystal and offers 130m of water resistance. [seikata-wm-0d7ff25ab603]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

12.2mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1977

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