Seiko Cal. 4438 - 143

This Spring Drive model from 1972 features a 36mm Two-Tone case. It features a Silver dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-095306ef01ca]

Also known as: Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1972

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